Create new versions of SerializeXXX() functions that uses pre-allocated buffer in SpdyFrameBuilder.

net/spdy/spdy_framer_test.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/spdy/spdy_framer.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include <algorithm>
 #include <cstdint>
 #include <limits>
 #include <memory>
 #include <string>
 #include <tuple>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/core/quic_flags.h"
+#include "net/spdy/array_output_buffer.h"
 #include "net/spdy/hpack/hpack_constants.h"
 #include "net/spdy/mock_spdy_framer_visitor.h"
 #include "net/spdy/spdy_flags.h"
 #include "net/spdy/spdy_frame_builder.h"
 #include "net/spdy/spdy_frame_reader.h"
 #include "net/spdy/spdy_protocol.h"
 #include "net/spdy/spdy_test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 using base::StringPiece;
 using std::string;
 using testing::_;
 
 namespace net {
 
 namespace test {
 
+namespace {
+
+const int64_t kSize = 64 * 1024;
+char output_buffer[kSize] = "";
+}
+
 class MockDebugVisitor : public SpdyFramerDebugVisitorInterface {
  public:
   MOCK_METHOD4(OnSendCompressedFrame,
                void(SpdyStreamId stream_id,
                     SpdyFrameType type,
                     size_t payload_len,
                     size_t frame_len));
 
   MOCK_METHOD3(OnReceiveCompressedFrame,
                void(SpdyStreamId stream_id,
@@ skipping 201 matching lines @@
     std::vector<SpdySerializedFrame> frame_list;
     SpdyFramer::SpdyHeaderFrameIterator it(framer, CloneSpdyHeadersIR(headers));
     while (it.HasNextFrame()) {
       frame_list.push_back(it.NextFrame());
     }
     framer->debug_visitor_ = saved_debug_visitor;
 
     EXPECT_THAT(serialized_headers_old_version, IsFrameUnionOf(&frame_list));
     return serialized_headers_old_version;
   }
+
+  static SpdySerializedFrame SerializeHeaders(SpdyFramer* framer,
+                                              const SpdyHeadersIR& headers,
+                                              ArrayOutputBuffer* output) {
+    if (output == nullptr) {
+      return SerializeHeaders(framer, headers);
+    }
+    output->Reset();
+    EXPECT_TRUE(framer->SerializeHeaders(headers, output));
+    SpdySerializedFrame serialized_headers_old_version(output->Begin(),
+                                                       output->Size(), false);
+    framer->hpack_encoder_.reset(nullptr);
+    auto* saved_debug_visitor = framer->debug_visitor_;
+    framer->debug_visitor_ = nullptr;
+
+    std::vector<SpdySerializedFrame> frame_list;
+    SpdyFramer::SpdyHeaderFrameIterator it(framer, CloneSpdyHeadersIR(headers));
+    while (it.HasNextFrame()) {
+      frame_list.push_back(it.NextFrame());
+    }
+    framer->debug_visitor_ = saved_debug_visitor;
+
+    EXPECT_THAT(serialized_headers_old_version, IsFrameUnionOf(&frame_list));
+    return serialized_headers_old_version;
+  }
 };
 
 class TestSpdyVisitor : public SpdyFramerVisitorInterface,
                         public SpdyFramerDebugVisitorInterface {
  public:
   // This is larger than our max frame size because header blocks that
   // are too long can spill over into CONTINUATION frames.
   static const size_t kDefaultHeaderBufferSize = 16 * 1024 * 1024;
 
   explicit TestSpdyVisitor(SpdyFramer::CompressionOption option)
@@ skipping 356 matching lines @@
   DCHECK_EQ(HEADERS, type);
   uint8_t flags;
   reader.ReadUInt8(&flags);
 
   return StringPiece(frame.data() + framer.GetHeadersMinimumSize(),
                      frame.size() - framer.GetHeadersMinimumSize());
 }
 
 enum DecoderChoice { DECODER_SELF, DECODER_NESTED, DECODER_HTTP2 };
 enum HpackChoice { HPACK_DECODER_1, HPACK_DECODER_2, HPACK_DECODER_3 };
+enum Output { USE, NOT_USE };
 
-class SpdyFramerTest
-    : public ::testing::TestWithParam<std::tuple<DecoderChoice, HpackChoice>> {
+class SpdyFramerTest : public ::testing::TestWithParam<
+                           std::tuple<DecoderChoice, HpackChoice, Output>> {
+ public:
+  SpdyFramerTest() : output_(output_buffer, kSize) {}
+
  protected:
   void SetUp() override {
     auto param = GetParam();
     switch (std::get<0>(param)) {
       case DECODER_SELF:
         FLAGS_use_nested_spdy_framer_decoder = false;
         FLAGS_chromium_http2_flag_spdy_use_http2_frame_decoder_adapter = false;
         break;
       case DECODER_NESTED:
         FLAGS_use_nested_spdy_framer_decoder = true;
@@ skipping 11 matching lines @@
         break;
       case HPACK_DECODER_2:
         FLAGS_chromium_http2_flag_spdy_use_hpack_decoder2 = true;
         FLAGS_chromium_http2_flag_spdy_use_hpack_decoder3 = false;
         break;
       case HPACK_DECODER_3:
         FLAGS_chromium_http2_flag_spdy_use_hpack_decoder2 = false;
         FLAGS_chromium_http2_flag_spdy_use_hpack_decoder3 = true;
         break;
     }
+    switch (std::get<2>(param)) {
+      case USE:
+        use_output_ = true;
+        break;
+      case NOT_USE:
+        // TODO(yasong): remove this case after
+        // gfe2_reloadable_flag_write_queue_zero_copy_buffer deprecates.

[Bence, 2017/03/16 18:12:54]

s/gfe2_reloadable_flag_write_queue_zero_copy_buffer/FLAGS_chromium_http2_flag_remove_rewritelength/

[yasong, 2017/03/16 22:28:52]

Done.

+        use_output_ = false;
+        break;
+    }
   }
 
   void CompareFrame(const string& description,
                     const SpdySerializedFrame& actual_frame,
                     const unsigned char* expected,
                     const int expected_len) {
     const unsigned char* actual =
         reinterpret_cast<const unsigned char*>(actual_frame.data());
     CompareCharArraysWithHexError(description, actual, actual_frame.size(),
                                   expected, expected_len);
   }
 
   void CompareFrames(const string& description,
                      const SpdySerializedFrame& expected_frame,
                      const SpdySerializedFrame& actual_frame) {
     CompareCharArraysWithHexError(
         description,
         reinterpret_cast<const unsigned char*>(expected_frame.data()),
         expected_frame.size(),
         reinterpret_cast<const unsigned char*>(actual_frame.data()),
         actual_frame.size());
   }
+
+  bool use_output_ = false;
+  ArrayOutputBuffer output_;
 };
 
 INSTANTIATE_TEST_CASE_P(
     SpdyFramerTests,
     SpdyFramerTest,
     ::testing::Combine(
         ::testing::Values(DECODER_SELF, DECODER_NESTED, DECODER_HTTP2),
-        ::testing::Values(HPACK_DECODER_1, HPACK_DECODER_2, HPACK_DECODER_3)));
+        ::testing::Values(HPACK_DECODER_1, HPACK_DECODER_2, HPACK_DECODER_3),
+        ::testing::Values(USE, NOT_USE)));
 
 // Test that we can encode and decode a SpdyHeaderBlock in serialized form.
 TEST_P(SpdyFramerTest, HeaderBlockInBuffer) {
   SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
 
   // Encode the header block into a Headers frame.
   SpdyHeadersIR headers(1);
   headers.SetHeader("alpha", "beta");
   headers.SetHeader("gamma", "charlie");
   headers.SetHeader("cookie", "key1=value1; key2=value2");
-  SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(&framer, headers));
+  SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers, use_output_ ? &output_ : nullptr));
 
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
   visitor.SimulateInFramer(reinterpret_cast<unsigned char*>(frame.data()),
                            frame.size());
 
   EXPECT_EQ(0, visitor.zero_length_control_frame_header_data_count_);
   EXPECT_EQ(headers.header_block(), visitor.headers_);
 }
 
 // Test that if there's not a full frame, we fail to parse it.
 TEST_P(SpdyFramerTest, UndersizedHeaderBlockInBuffer) {
   SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
 
   // Encode the header block into a Headers frame.
   SpdyHeadersIR headers(1);
   headers.SetHeader("alpha", "beta");
   headers.SetHeader("gamma", "charlie");
-  SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(&framer, headers));
+  SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers, use_output_ ? &output_ : nullptr));
 
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
   visitor.SimulateInFramer(reinterpret_cast<unsigned char*>(frame.data()),
                            frame.size() - 2);
 
   EXPECT_EQ(0, visitor.zero_length_control_frame_header_data_count_);
   EXPECT_EQ(0u, visitor.headers_.size());
 }
 
 // Test that we treat incoming upper-case or mixed-case header values as
@@ skipping 36 matching lines @@
   SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
 
   const SpdyStreamId parent_stream_id_test_array[] = {0, 3};
   for (SpdyStreamId parent_stream_id : parent_stream_id_test_array) {
     const bool exclusive_test_array[] = {true, false};
     for (bool exclusive : exclusive_test_array) {
       SpdyHeadersIR headers(1);
       headers.set_has_priority(true);
       headers.set_parent_stream_id(parent_stream_id);
       headers.set_exclusive(exclusive);
-      SpdySerializedFrame frame(
-          SpdyFramerPeer::SerializeHeaders(&framer, headers));
+      SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+          &framer, headers, use_output_ ? &output_ : nullptr));
 
       TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
       visitor.SimulateInFramer(reinterpret_cast<unsigned char*>(frame.data()),
                                frame.size());
 
       EXPECT_TRUE(visitor.header_has_priority_);
       EXPECT_EQ(parent_stream_id, visitor.header_parent_stream_id_);
       EXPECT_EQ(exclusive, visitor.header_exclusive_);
     }
   }
@@ skipping 200 matching lines @@
 
 // Test that if we receive a HEADERS with stream ID zero, we signal an error
 // (but don't crash).
 TEST_P(SpdyFramerTest, HeadersWithStreamIdZero) {
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   SpdyHeadersIR headers(0);
   headers.SetHeader("alpha", "beta");
-  SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(&framer, headers));
+  SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers, use_output_ ? &output_ : nullptr));
 
   // We shouldn't have to read the whole frame before we signal an error.
   EXPECT_CALL(visitor, OnError(testing::Eq(&framer)));
   EXPECT_GT(frame.size(), framer.ProcessInput(frame.data(), frame.size()));
   EXPECT_TRUE(framer.HasError());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_STREAM_ID, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 // Test that if we receive a PRIORITY with stream ID zero, we signal an error
 // (but don't crash).
 TEST_P(SpdyFramerTest, PriorityWithStreamIdZero) {
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   SpdyPriorityIR priority_ir(0, 1, 16, true);
   SpdySerializedFrame frame(framer.SerializeFrame(priority_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeFrame(priority_ir, &output_));

[Bence, 2017/03/16 18:12:54]

Please use ASSERT_TRUE instead of EXPECT_TRUE, because that is closer to the
internal code, here and below at multiple places.

[yasong, 2017/03/16 22:28:52]

Done.

+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
 
   // We shouldn't have to read the whole frame before we signal an error.
   EXPECT_CALL(visitor, OnError(testing::Eq(&framer)));
   EXPECT_GT(frame.size(), framer.ProcessInput(frame.data(), frame.size()));
   EXPECT_TRUE(framer.HasError());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_STREAM_ID, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 // Test that if we receive a RST_STREAM with stream ID zero, we signal an error
 // (but don't crash).
 TEST_P(SpdyFramerTest, RstStreamWithStreamIdZero) {
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   SpdyRstStreamIR rst_stream_ir(0, ERROR_CODE_PROTOCOL_ERROR);
   SpdySerializedFrame frame(framer.SerializeRstStream(rst_stream_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeRstStream(rst_stream_ir, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
 
   // We shouldn't have to read the whole frame before we signal an error.
   EXPECT_CALL(visitor, OnError(testing::Eq(&framer)));
   EXPECT_GT(frame.size(), framer.ProcessInput(frame.data(), frame.size()));
   EXPECT_TRUE(framer.HasError());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_STREAM_ID, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 // Test that if we receive a SETTINGS with stream ID other than zero,
@@ skipping 57 matching lines @@
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   SpdyContinuationIR continuation(0);
   auto some_nonsense_encoding =
       base::MakeUnique<string>("some nonsense encoding");
   continuation.take_encoding(std::move(some_nonsense_encoding));
   continuation.set_end_headers(true);
   SpdySerializedFrame frame(framer.SerializeContinuation(continuation));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeContinuation(continuation, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
 
   // We shouldn't have to read the whole frame before we signal an error.
   EXPECT_CALL(visitor, OnError(testing::Eq(&framer)));
   EXPECT_GT(frame.size(), framer.ProcessInput(frame.data(), frame.size()));
   EXPECT_TRUE(framer.HasError());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_STREAM_ID, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 // Test that if we receive a PUSH_PROMISE with stream ID zero, we signal an
 // SPDY_INVALID_STREAM_ID.
 TEST_P(SpdyFramerTest, PushPromiseWithStreamIdZero) {
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   SpdyPushPromiseIR push_promise(0, 4);
   push_promise.SetHeader("alpha", "beta");
   SpdySerializedFrame frame(framer.SerializePushPromise(push_promise));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
 
   // We shouldn't have to read the whole frame before we signal an error.
   EXPECT_CALL(visitor, OnError(testing::Eq(&framer)));
   EXPECT_GT(frame.size(), framer.ProcessInput(frame.data(), frame.size()));
   EXPECT_TRUE(framer.HasError());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_STREAM_ID, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 // Test that if we receive a PUSH_PROMISE with promised stream ID zero, we
 // signal SPDY_INVALID_STREAM_ID.
 TEST_P(SpdyFramerTest, PushPromiseWithPromisedStreamIdZero) {
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   SpdyPushPromiseIR push_promise(3, 0);
   push_promise.SetHeader("alpha", "beta");
   SpdySerializedFrame frame(framer.SerializePushPromise(push_promise));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
 
   EXPECT_CALL(visitor, OnError(testing::Eq(&framer)));
   framer.ProcessInput(frame.data(), frame.size());
   EXPECT_TRUE(framer.HasError());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_CONTROL_FRAME, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 TEST_P(SpdyFramerTest, DuplicateHeader) {
   SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
@@ skipping 226 matching lines @@
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   const char kHeader1[] = "header1";
   const char kHeader2[] = "header2";
   const char kValue1[] = "value1";
   const char kValue2[] = "value2";
 
   SpdyHeadersIR headers(1);
   headers.SetHeader(kHeader1, kValue1);
   headers.SetHeader(kHeader2, kValue2);
-  SpdySerializedFrame headers_frame(
-      SpdyFramerPeer::SerializeHeaders(&framer, headers));
+  SpdySerializedFrame headers_frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers, use_output_ ? &output_ : nullptr));
 
   const char bytes[] = "this is a test test test test test!";
   SpdyDataIR data_ir(1, StringPiece(bytes, arraysize(bytes)));
   data_ir.set_fin(true);
   SpdySerializedFrame send_frame(framer.SerializeData(data_ir));
 
   // Run the inputs through the framer.
   TestSpdyVisitor visitor(SpdyFramer::ENABLE_COMPRESSION);
   const unsigned char* data;
   data = reinterpret_cast<const unsigned char*>(headers_frame.data());
@@ skipping 11 matching lines @@
   EXPECT_EQ(1, visitor.headers_frame_count_);
   EXPECT_EQ(arraysize(bytes), static_cast<unsigned>(visitor.data_bytes_));
   EXPECT_EQ(0, visitor.fin_frame_count_);
   EXPECT_EQ(0, visitor.fin_flag_count_);
   EXPECT_EQ(1, visitor.end_of_stream_count_);
   EXPECT_EQ(1, visitor.data_frame_count_);
 }
 
 TEST_P(SpdyFramerTest, WindowUpdateFrame) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
-  SpdySerializedFrame frame(
-      framer.SerializeWindowUpdate(SpdyWindowUpdateIR(1, 0x12345678)));
+  SpdyWindowUpdateIR window_update(1, 0x12345678);
+  SpdySerializedFrame frame(framer.SerializeWindowUpdate(window_update));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeWindowUpdate(window_update, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
 
   const char kDescription[] = "WINDOW_UPDATE frame, stream 1, delta 0x12345678";
   const unsigned char kH2FrameData[] = {
       0x00, 0x00, 0x04,        // Length: 4
       0x08,                    //   Type: WINDOW_UPDATE
       0x00,                    //  Flags: none
       0x00, 0x00, 0x00, 0x01,  // Stream: 1
       0x12, 0x34, 0x56, 0x78,  // Increment: 305419896
   };
 
@@ skipping 209 matching lines @@
     const char kDescription[] = "RST_STREAM frame";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x04,        // Length: 4
         0x03,                    //   Type: RST_STREAM
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x01,  // Stream: 1
         0x00, 0x00, 0x00, 0x01,  //  Error: PROTOCOL_ERROR
     };
     SpdyRstStreamIR rst_stream(1, ERROR_CODE_PROTOCOL_ERROR);
     SpdySerializedFrame frame(framer.SerializeRstStream(rst_stream));
+    if (use_output_) {
+      EXPECT_TRUE(framer.SerializeRstStream(rst_stream, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] = "RST_STREAM frame with max stream ID";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x04,        // Length: 4
         0x03,                    //   Type: RST_STREAM
         0x00,                    //  Flags: none
         0x7f, 0xff, 0xff, 0xff,  // Stream: 0x7fffffff
         0x00, 0x00, 0x00, 0x01,  //  Error: PROTOCOL_ERROR
     };
     SpdyRstStreamIR rst_stream(0x7FFFFFFF, ERROR_CODE_PROTOCOL_ERROR);
     SpdySerializedFrame frame(framer.SerializeRstStream(rst_stream));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeRstStream(rst_stream, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] = "RST_STREAM frame with max status code";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x04,        // Length: 4
         0x03,                    //   Type: RST_STREAM
         0x00,                    //  Flags: none
         0x7f, 0xff, 0xff, 0xff,  // Stream: 0x7fffffff
         0x00, 0x00, 0x00, 0x02,  //  Error: INTERNAL_ERROR
     };
     SpdyRstStreamIR rst_stream(0x7FFFFFFF, ERROR_CODE_INTERNAL_ERROR);
     SpdySerializedFrame frame(framer.SerializeRstStream(rst_stream));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeRstStream(rst_stream, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 }
 
 TEST_P(SpdyFramerTest, CreateSettings) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   {
     const char kDescription[] = "Network byte order SETTINGS frame";
 
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x06,        // Length: 6
         0x04,                    //   Type: SETTINGS
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x00,  // Stream: 0
         0x00, 0x04,              //  Param: INITIAL_WINDOW_SIZE
         0x0a, 0x0b, 0x0c, 0x0d,  //  Value: 168496141
     };
 
     uint32_t kValue = 0x0a0b0c0d;
     SpdySettingsIR settings_ir;
 
     SpdySettingsIds kId = SETTINGS_INITIAL_WINDOW_SIZE;
     settings_ir.AddSetting(kId, kValue);
 
     SpdySerializedFrame frame(framer.SerializeSettings(settings_ir));
+    if (use_output_) {
+      EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] = "Basic SETTINGS frame";
     // These end up seemingly out of order because of the way that our internal
     // ordering for settings_ir works. HTTP2 has no requirement on ordering on
     // the wire.
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x18,        // Length: 24
         0x04,                    //   Type: SETTINGS
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x00,  // Stream: 0
         0x00, 0x01,              //  Param: HEADER_TABLE_SIZE
         0x00, 0x00, 0x00, 0x05,  //  Value: 5
         0x00, 0x02,              //  Param: ENABLE_PUSH
         0x00, 0x00, 0x00, 0x06,  //  Value: 6
         0x00, 0x03,              //  Param: MAX_CONCURRENT_STREAMS
         0x00, 0x00, 0x00, 0x07,  //  Value: 7
         0x00, 0x04,              //  Param: INITIAL_WINDOW_SIZE
         0x00, 0x00, 0x00, 0x08,  //  Value: 8
     };
 
     SpdySettingsIR settings_ir;
     settings_ir.AddSetting(SETTINGS_HEADER_TABLE_SIZE, 5);
     settings_ir.AddSetting(SETTINGS_ENABLE_PUSH, 6);
     settings_ir.AddSetting(SETTINGS_MAX_CONCURRENT_STREAMS, 7);
     settings_ir.AddSetting(SETTINGS_INITIAL_WINDOW_SIZE, 8);
     SpdySerializedFrame frame(framer.SerializeSettings(settings_ir));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
 
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] = "Empty SETTINGS frame";
 
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x00,        // Length: 0
         0x04,                    //   Type: SETTINGS
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x00,  // Stream: 0
     };
     SpdySettingsIR settings_ir;
     SpdySerializedFrame frame(framer.SerializeSettings(settings_ir));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
+
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 }
 
 TEST_P(SpdyFramerTest, CreatePingFrame) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   {
     const char kDescription[] = "PING frame";
     const unsigned char kH2FrameData[] = {
@@ skipping 11 matching lines @@
         0x00, 0x00, 0x00, 0x00,  // Stream: 0
         0x12, 0x34, 0x56, 0x78,  // Opaque
         0x9a, 0xbc, 0xde, 0xff,  //     Data
     };
     SpdySerializedFrame frame;
     const SpdyPingId kPingId = 0x123456789abcdeffULL;
     SpdyPingIR ping_ir(kPingId);
     // Tests SpdyPingIR when the ping is not an ack.
     ASSERT_FALSE(ping_ir.is_ack());
     frame = framer.SerializePing(ping_ir);
+    if (use_output_) {
+      EXPECT_TRUE(framer.SerializePing(ping_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
 
     // Tests SpdyPingIR when the ping is an ack.
     ping_ir.set_is_ack(true);
     frame = framer.SerializePing(ping_ir);
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializePing(ping_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameDataWithAck,
                  arraysize(kH2FrameDataWithAck));
   }
 }
 
 TEST_P(SpdyFramerTest, CreateGoAway) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   {
     const char kDescription[] = "GOAWAY frame";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x0a,        // Length: 10
         0x07,                    //   Type: GOAWAY
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x00,  // Stream: 0
         0x00, 0x00, 0x00, 0x00,  //   Last: 0
         0x00, 0x00, 0x00, 0x00,  //  Error: NO_ERROR
         0x47, 0x41,              // Description
     };
     SpdyGoAwayIR goaway_ir(0, ERROR_CODE_NO_ERROR, "GA");
     SpdySerializedFrame frame(framer.SerializeGoAway(goaway_ir));
+    if (use_output_) {
+      EXPECT_TRUE(framer.SerializeGoAway(goaway_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] = "GOAWAY frame with max stream ID, status";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x0a,        // Length: 10
         0x07,                    //   Type: GOAWAY
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x00,  // Stream: 0
         0x7f, 0xff, 0xff, 0xff,  //   Last: 0x7fffffff
         0x00, 0x00, 0x00, 0x02,  //  Error: INTERNAL_ERROR
         0x47, 0x41,              // Description
     };
     SpdyGoAwayIR goaway_ir(0x7FFFFFFF, ERROR_CODE_INTERNAL_ERROR, "GA");
     SpdySerializedFrame frame(framer.SerializeGoAway(goaway_ir));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeGoAway(goaway_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 }
 
 TEST_P(SpdyFramerTest, CreateHeadersUncompressed) {
   SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
 
   {
     const char kDescription[] = "HEADERS frame, no FIN";
     // frame-format off
@@ skipping 13 matching lines @@
         0x03,              // Name Len: 3
         0x66, 0x6f, 0x6f,  // foo
         0x03,              // Value Len: 3
         0x62, 0x61, 0x72,  // bar
     };
     // frame-format on
 
     SpdyHeadersIR headers(1);
     headers.SetHeader("bar", "foo");
     headers.SetHeader("foo", "bar");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers, use_output_ ? &output_ : nullptr));
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] =
         "HEADERS frame with a 0-length header name, FIN, max stream ID";
     // frame-format off
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x0f,        // Length: 15
         0x01,                    //   Type: HEADERS
         0x05,                    //  Flags: END_STREAM|END_HEADERS
         0x7f, 0xff, 0xff, 0xff,  // Stream: 2147483647
 
         0x00,              // Unindexed Entry
         0x00,              // Name Len: 0
         0x03,              // Value Len: 3
         0x66, 0x6f, 0x6f,  // foo
 
         0x00,              // Unindexed Entry
         0x03,              // Name Len: 3
         0x66, 0x6f, 0x6f,  // foo
         0x03,              // Value Len: 3
         0x62, 0x61, 0x72,  // bar
     };
     // frame-format on
     SpdyHeadersIR headers(0x7fffffff);
     headers.set_fin(true);
     headers.SetHeader("", "foo");
     headers.SetHeader("foo", "bar");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers, use_output_ ? &output_ : nullptr));
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] =
         "HEADERS frame with a 0-length header val, FIN, max stream ID";
     // frame-format off
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x0f,        // Length: 15
         0x01,                    //   Type: HEADERS
         0x05,                    //  Flags: END_STREAM|END_HEADERS
         0x7f, 0xff, 0xff, 0xff,  // Stream: 2147483647
 
         0x00,              // Unindexed Entry
         0x03,              // Name Len: 3
         0x62, 0x61, 0x72,  // bar
         0x03,              // Value Len: 3
         0x66, 0x6f, 0x6f,  // foo
 
         0x00,              // Unindexed Entry
         0x03,              // Name Len: 3
         0x66, 0x6f, 0x6f,  // foo
         0x00,              // Value Len: 0
     };
     // frame-format on
     SpdyHeadersIR headers_ir(0x7fffffff);
     headers_ir.set_fin(true);
     headers_ir.SetHeader("bar", "foo");
     headers_ir.SetHeader("foo", "");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] =
         "HEADERS frame with a 0-length header val, FIN, max stream ID, pri";
 
     // frame-format off
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x14,        // Length: 20
@@ skipping 14 matching lines @@
         0x66, 0x6f, 0x6f,  // foo
         0x00,              // Value Len: 0
     };
     // frame-format on
     SpdyHeadersIR headers_ir(0x7fffffff);
     headers_ir.set_fin(true);
     headers_ir.set_has_priority(true);
     headers_ir.set_weight(220);
     headers_ir.SetHeader("bar", "foo");
     headers_ir.SetHeader("foo", "");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] =
         "HEADERS frame with a 0-length header val, FIN, max stream ID, pri, "
         "exclusive=true, parent_stream=0";
 
     // frame-format off
     const unsigned char kV4FrameData[] = {
@@ skipping 17 matching lines @@
     };
     // frame-format on
     SpdyHeadersIR headers_ir(0x7fffffff);
     headers_ir.set_fin(true);
     headers_ir.set_has_priority(true);
     headers_ir.set_weight(220);
     headers_ir.set_exclusive(true);
     headers_ir.set_parent_stream_id(0);
     headers_ir.SetHeader("bar", "foo");
     headers_ir.SetHeader("foo", "");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     CompareFrame(kDescription, frame, kV4FrameData, arraysize(kV4FrameData));
   }
 
   {
     const char kDescription[] =
         "HEADERS frame with a 0-length header val, FIN, max stream ID, pri, "
         "exclusive=false, parent_stream=max stream ID";
 
     // frame-format off
     const unsigned char kV4FrameData[] = {
@@ skipping 17 matching lines @@
     };
     // frame-format on
     SpdyHeadersIR headers_ir(0x7fffffff);
     headers_ir.set_fin(true);
     headers_ir.set_has_priority(true);
     headers_ir.set_weight(220);
     headers_ir.set_exclusive(false);
     headers_ir.set_parent_stream_id(0x7fffffff);
     headers_ir.SetHeader("bar", "foo");
     headers_ir.SetHeader("foo", "");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     CompareFrame(kDescription, frame, kV4FrameData, arraysize(kV4FrameData));
   }
 
   {
     const char kDescription[] =
         "HEADERS frame with a 0-length header name, FIN, max stream ID, padded";
 
     // frame-format off
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x15,        // Length: 21
@@ skipping 15 matching lines @@
 
         0x00, 0x00, 0x00, 0x00,  // Padding
         0x00,                    // Padding
     };
     // frame-format on
     SpdyHeadersIR headers_ir(0x7fffffff);
     headers_ir.set_fin(true);
     headers_ir.SetHeader("", "foo");
     headers_ir.SetHeader("foo", "bar");
     headers_ir.set_padding_len(6);
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 }
 
 // TODO(phajdan.jr): Clean up after we no longer need
 // to workaround http://crbug.com/139744.
 #if !defined(USE_SYSTEM_ZLIB)
 TEST_P(SpdyFramerTest, CreateHeadersCompressed) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   {
     SpdyHeadersIR headers_ir(1);
     headers_ir.SetHeader("bar", "foo");
     headers_ir.SetHeader("foo", "bar");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     // Deflate compression doesn't apply to HPACK.
   }
 }
 #endif  // !defined(USE_SYSTEM_ZLIB)
 
 TEST_P(SpdyFramerTest, CreateWindowUpdate) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   {
     const char kDescription[] = "WINDOW_UPDATE frame";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x04,        // Length: 4
         0x08,                    //   Type: WINDOW_UPDATE
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x01,  // Stream: 1
         0x00, 0x00, 0x00, 0x01,  // Increment: 1
     };
     SpdySerializedFrame frame(
         framer.SerializeWindowUpdate(SpdyWindowUpdateIR(1, 1)));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(
+          framer.SerializeWindowUpdate(SpdyWindowUpdateIR(1, 1), &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] = "WINDOW_UPDATE frame with max stream ID";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x04,        // Length: 4
         0x08,                    //   Type: WINDOW_UPDATE
         0x00,                    //  Flags: none
         0x7f, 0xff, 0xff, 0xff,  // Stream: 0x7fffffff
         0x00, 0x00, 0x00, 0x01,  // Increment: 1
     };
     SpdySerializedFrame frame(
         framer.SerializeWindowUpdate(SpdyWindowUpdateIR(0x7FFFFFFF, 1)));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeWindowUpdate(
+          SpdyWindowUpdateIR(0x7FFFFFFF, 1), &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 
   {
     const char kDescription[] = "WINDOW_UPDATE frame with max window delta";
     const unsigned char kH2FrameData[] = {
         0x00, 0x00, 0x04,        // Length: 4
         0x08,                    //   Type: WINDOW_UPDATE
         0x00,                    //  Flags: none
         0x00, 0x00, 0x00, 0x01,  // Stream: 1
         0x7f, 0xff, 0xff, 0xff,  // Increment: 0x7fffffff
     };
     SpdySerializedFrame frame(
         framer.SerializeWindowUpdate(SpdyWindowUpdateIR(1, 0x7FFFFFFF)));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeWindowUpdate(
+          SpdyWindowUpdateIR(1, 0x7FFFFFFF), &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kH2FrameData, arraysize(kH2FrameData));
   }
 }
 
 TEST_P(SpdyFramerTest, SerializeBlocked) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   const char kDescription[] = "BLOCKED frame";
   const unsigned char kType = static_cast<unsigned char>(BLOCKED);
   const unsigned char kFrameData[] = {
       0x00,  0x00, 0x00,        // Length: 0
       kType,                    //   Type: BLOCKED
       0x00,                     //  Flags: none
       0x00,  0x00, 0x00, 0x00,  // Stream: 0
   };
   SpdyBlockedIR blocked_ir(0);
   SpdySerializedFrame frame(framer.SerializeFrame(blocked_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeFrame(blocked_ir, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
 }
 
 TEST_P(SpdyFramerTest, CreateBlocked) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   const char kDescription[] = "BLOCKED frame";
   const SpdyStreamId kStreamId = 3;
 
   SpdySerializedFrame frame_serialized(
       framer.SerializeBlocked(SpdyBlockedIR(kStreamId)));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeBlocked(SpdyBlockedIR(kStreamId), &output_));
+    frame_serialized =
+        SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   SpdyBlockedIR blocked_ir(kStreamId);
   SpdySerializedFrame frame_created(framer.SerializeFrame(blocked_ir));
 
   CompareFrames(kDescription, frame_serialized, frame_created);
 }
 
 TEST_P(SpdyFramerTest, CreatePushPromiseUncompressed) {
   {
     // Test framing PUSH_PROMISE without padding.
     SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
@@ skipping 18 matching lines @@
         0x66, 0x6f, 0x6f,  // foo
         0x03,              // Value Len: 3
         0x62, 0x61, 0x72,  // bar
     };
     // frame-format on
 
     SpdyPushPromiseIR push_promise(41, 58);
     push_promise.SetHeader("bar", "foo");
     push_promise.SetHeader("foo", "bar");
     SpdySerializedFrame frame(framer.SerializePushPromise(push_promise));
+    if (use_output_) {
+      EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
   }
 
   {
     // Test framing PUSH_PROMISE with one byte of padding.
     SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
     const char kDescription[] = "PUSH_PROMISE frame with one byte of padding";
 
     // frame-format off
     const unsigned char kFrameData[] = {
@@ skipping 16 matching lines @@
         0x03,              // Value Len: 3
         0x62, 0x61, 0x72,  // bar
     };
     // frame-format on
 
     SpdyPushPromiseIR push_promise(41, 58);
     push_promise.set_padding_len(1);
     push_promise.SetHeader("bar", "foo");
     push_promise.SetHeader("foo", "bar");
     SpdySerializedFrame frame(framer.SerializePushPromise(push_promise));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
   }
 
   {
     // Test framing PUSH_PROMISE with 177 bytes of padding.
     SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
     const char kDescription[] = "PUSH_PROMISE frame with 177 bytes of padding";
 
     // frame-format off
     // clang-format off
@@ skipping 36 matching lines @@
       0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00, 0x00,  0x00,  0x00,
     };
     // clang-format on
     // frame-format on
 
     SpdyPushPromiseIR push_promise(42, 57);
     push_promise.set_padding_len(177);
     push_promise.SetHeader("bar", "foo");
     push_promise.SetHeader("foo", "bar");
     SpdySerializedFrame frame(framer.SerializePushPromise(push_promise));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
   }
 }
 
 // Regression test for https://crbug.com/464748.
 TEST_P(SpdyFramerTest, GetNumberRequiredContinuationFrames) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   EXPECT_EQ(1u, SpdyFramerPeer::GetNumberRequiredContinuationFrames(
                     &framer, 16383 + 16374));
   EXPECT_EQ(2u, SpdyFramerPeer::GetNumberRequiredContinuationFrames(
@@ skipping 35 matching lines @@
   auto buffer = base::MakeUnique<string>();
   HpackEncoder encoder(ObtainHpackHuffmanTable());
   encoder.DisableCompression();
   encoder.EncodeHeaderSet(header_block, buffer.get());
 
   SpdyContinuationIR continuation(42);
   continuation.take_encoding(std::move(buffer));
   continuation.set_end_headers(true);
 
   SpdySerializedFrame frame(framer.SerializeContinuation(continuation));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeContinuation(continuation, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
 }
 
 // Test that if we send an unexpected CONTINUATION
 // we signal an error (but don't crash).
 TEST_P(SpdyFramerTest, SendUnexpectedContinuation) {
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
@@ skipping 84 matching lines @@
         0x78, 0x78, 0x78, 0x78,  // xxxx
         0x78,                    // x
     };
     // frame-format on
 
     SpdyPushPromiseIR push_promise(42, 57);
     push_promise.set_padding_len(1);
     string big_value(TestSpdyVisitor::sent_control_frame_max_size(), 'x');
     push_promise.SetHeader("xxx", big_value);
     SpdySerializedFrame frame(framer.SerializePushPromise(push_promise));
+    if (use_output_) {
+      EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
 
     // The entire frame should look like below:
     // Name                     Length in Byte
     // ------------------------------------------- Begin of PUSH_PROMISE frame
     // PUSH_PROMISE header      9
     // Pad length field         1
     // Promised stream          4
     // Length field of key      2
     // Content of key           3
     // Length field of value    3
@@ skipping 38 matching lines @@
       's',  't',  ':',  '1',   '2',  '3',  '"',  ';',  ' ',  'm',  'a',  '=',
       '4',  '2',  ';',  ' ',   'v',  '=',  '"',  '2',  '4',  '"'};
   SpdyAltSvcIR altsvc_ir(3);
   altsvc_ir.set_origin("origin");
   altsvc_ir.add_altsvc(SpdyAltSvcWireFormat::AlternativeService(
       "pid1", "host", 443, 5, SpdyAltSvcWireFormat::VersionVector()));
   altsvc_ir.add_altsvc(SpdyAltSvcWireFormat::AlternativeService(
       "p\"=i:d", "h_\\o\"st", 123, 42,
       SpdyAltSvcWireFormat::VersionVector{24}));
   SpdySerializedFrame frame(framer.SerializeFrame(altsvc_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeFrame(altsvc_ir, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
 }
 
 TEST_P(SpdyFramerTest, CreatePriority) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
 
   const char kDescription[] = "PRIORITY frame";
   const unsigned char kFrameData[] = {
       0x00, 0x00, 0x05,        // Length: 5
       0x02,                    //   Type: PRIORITY
       0x00,                    //  Flags: none
       0x00, 0x00, 0x00, 0x02,  // Stream: 2
       0x80, 0x00, 0x00, 0x01,  // Parent: 1 (Exclusive)
       0x10,                    // Weight: 17
   };
   SpdyPriorityIR priority_ir(2, 1, 17, true);
   SpdySerializedFrame frame(framer.SerializeFrame(priority_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeFrame(priority_ir, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
   SpdyPriorityIR priority2(2);
   priority2.set_parent_stream_id(1);
   priority2.set_weight(17);
   priority2.set_exclusive(true);
-  frame = framer.SerializeFrame(priority2);
+  if (use_output_) {
+    output_.Reset();
+    EXPECT_TRUE(framer.SerializeFrame(priority2, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  } else {
+    frame = framer.SerializeFrame(priority2);
+  }
   CompareFrame(kDescription, frame, kFrameData, arraysize(kFrameData));
 }
 
 TEST_P(SpdyFramerTest, ReadCompressedHeadersHeaderBlock) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdyHeadersIR headers_ir(1);
   headers_ir.SetHeader("alpha", "beta");
   headers_ir.SetHeader("gamma", "delta");
-  SpdySerializedFrame control_frame(
-      SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+  SpdySerializedFrame control_frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers_ir, use_output_ ? &output_ : nullptr));
   TestSpdyVisitor visitor(SpdyFramer::ENABLE_COMPRESSION);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   EXPECT_EQ(1, visitor.headers_frame_count_);
   EXPECT_EQ(0, visitor.control_frame_header_data_count_);
   EXPECT_EQ(0, visitor.zero_length_control_frame_header_data_count_);
   EXPECT_EQ(0, visitor.end_of_stream_count_);
   EXPECT_EQ(headers_ir.header_block(), visitor.headers_);
 }
 
 TEST_P(SpdyFramerTest, ReadCompressedHeadersHeaderBlockWithHalfClose) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdyHeadersIR headers_ir(1);
   headers_ir.set_fin(true);
   headers_ir.SetHeader("alpha", "beta");
   headers_ir.SetHeader("gamma", "delta");
-  SpdySerializedFrame control_frame(
-      SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+  SpdySerializedFrame control_frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers_ir, use_output_ ? &output_ : nullptr));
   TestSpdyVisitor visitor(SpdyFramer::ENABLE_COMPRESSION);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   EXPECT_EQ(1, visitor.headers_frame_count_);
   EXPECT_EQ(0, visitor.control_frame_header_data_count_);
   EXPECT_EQ(0, visitor.zero_length_control_frame_header_data_count_);
   EXPECT_EQ(1, visitor.end_of_stream_count_);
   EXPECT_EQ(headers_ir.header_block(), visitor.headers_);
 }
 
 TEST_P(SpdyFramerTest, TooLargeHeadersFrameUsesContinuation) {
   SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
   SpdyHeadersIR headers(1);
   headers.set_padding_len(256);
 
   // Exact payload length will change with HPACK, but this should be long
   // enough to cause an overflow.
   const size_t kBigValueSize = TestSpdyVisitor::sent_control_frame_max_size();
   string big_value(kBigValueSize, 'x');
   headers.SetHeader("aa", big_value);
-  SpdySerializedFrame control_frame(
-      SpdyFramerPeer::SerializeHeaders(&framer, headers));
+  SpdySerializedFrame control_frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers, use_output_ ? &output_ : nullptr));
   EXPECT_GT(control_frame.size(),
             TestSpdyVisitor::sent_control_frame_max_size());
 
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   EXPECT_TRUE(visitor.header_buffer_valid_);
   EXPECT_EQ(0, visitor.error_count_);
   EXPECT_EQ(1, visitor.headers_frame_count_);
@@ skipping 66 matching lines @@
   SpdyFramer framer(SpdyFramer::DISABLE_COMPRESSION);
   SpdyPushPromiseIR push_promise(1, 2);
   push_promise.set_padding_len(256);
 
   // Exact payload length will change with HPACK, but this should be long
   // enough to cause an overflow.
   const size_t kBigValueSize = TestSpdyVisitor::sent_control_frame_max_size();
   string big_value(kBigValueSize, 'x');
   push_promise.SetHeader("aa", big_value);
   SpdySerializedFrame control_frame(framer.SerializePushPromise(push_promise));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+    control_frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   EXPECT_GT(control_frame.size(),
             TestSpdyVisitor::sent_control_frame_max_size());
 
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   EXPECT_TRUE(visitor.header_buffer_valid_);
   EXPECT_EQ(0, visitor.error_count_);
   EXPECT_EQ(1, visitor.push_promise_frame_count_);
   EXPECT_EQ(1, visitor.continuation_count_);
   EXPECT_EQ(0, visitor.zero_length_control_frame_header_data_count_);
 }
 
 // Check that the framer stops delivering header data chunks once the visitor
 // declares it doesn't want any more. This is important to guard against
 // "zip bomb" types of attacks.
 TEST_P(SpdyFramerTest, ControlFrameMuchTooLarge) {
   const size_t kHeaderBufferChunks = 4;
   const size_t kHeaderBufferSize =
       TestSpdyVisitor::header_data_chunk_max_size() * kHeaderBufferChunks;
   const size_t kBigValueSize = kHeaderBufferSize * 2;
   string big_value(kBigValueSize, 'x');
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdyHeadersIR headers(1);
   headers.set_fin(true);
   headers.SetHeader("aa", big_value);
-  SpdySerializedFrame control_frame(
-      SpdyFramerPeer::SerializeHeaders(&framer, headers));
+  SpdySerializedFrame control_frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers, use_output_ ? &output_ : nullptr));
   TestSpdyVisitor visitor(SpdyFramer::ENABLE_COMPRESSION);
   visitor.set_header_buffer_size(kHeaderBufferSize);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   // It's up to the visitor to ignore extraneous header data; the framer
   // won't throw an error.
   EXPECT_GT(visitor.header_bytes_received_, visitor.header_buffer_size_);
   EXPECT_EQ(1, visitor.end_of_stream_count_);
 }
@@ skipping 33 matching lines @@
             visitor.framer_.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(
              visitor.framer_.spdy_framer_error());
   EXPECT_EQ(0, visitor.goaway_count_);  // Frame not parsed.
 }
 
 TEST_P(SpdyFramerTest, ReadZeroLenSettingsFrame) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdySettingsIR settings_ir;
   SpdySerializedFrame control_frame(framer.SerializeSettings(settings_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+    control_frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   SetFrameLength(&control_frame, 0);
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       framer.GetFrameHeaderSize());
   // Zero-len settings frames are permitted as of HTTP/2.
   EXPECT_EQ(0, visitor.error_count_);
 }
 
 // Tests handling of SETTINGS frames with invalid length.
 TEST_P(SpdyFramerTest, ReadBogusLenSettingsFrame) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdySettingsIR settings_ir;
 
   // Add settings to more than fill the frame so that we don't get a buffer
   // overflow when calling SimulateInFramer() below.  These settings must be
   // distinct parameters because SpdySettingsIR has a map for settings, and will
   // collapse multiple copies of the same parameter.
   settings_ir.AddSetting(SETTINGS_INITIAL_WINDOW_SIZE, 0x00000002);
   settings_ir.AddSetting(SETTINGS_MAX_CONCURRENT_STREAMS, 0x00000002);
   SpdySerializedFrame control_frame(framer.SerializeSettings(settings_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+    control_frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   const size_t kNewLength = 8;
   SetFrameLength(&control_frame, kNewLength);
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       framer.GetFrameHeaderSize() + kNewLength);
   // Should generate an error, since its not possible to have a
   // settings frame of length kNewLength.
   EXPECT_EQ(1, visitor.error_count_);
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_CONTROL_FRAME_SIZE,
             visitor.framer_.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(
              visitor.framer_.spdy_framer_error());
 }
 
 // Tests handling of SETTINGS frames larger than the frame buffer size.
 TEST_P(SpdyFramerTest, ReadLargeSettingsFrame) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdySettingsIR settings_ir;
   settings_ir.AddSetting(SETTINGS_HEADER_TABLE_SIZE, 5);
   settings_ir.AddSetting(SETTINGS_ENABLE_PUSH, 6);
   settings_ir.AddSetting(SETTINGS_MAX_CONCURRENT_STREAMS, 7);
 
   SpdySerializedFrame control_frame(framer.SerializeSettings(settings_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+    control_frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
+
   EXPECT_LT(SpdyFramerPeer::ControlFrameBufferSize(), control_frame.size());
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
 
   // Read all at once.
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   EXPECT_EQ(0, visitor.error_count_);
   EXPECT_EQ(3, visitor.setting_count_);
   EXPECT_EQ(1, visitor.settings_ack_sent_);
@@ skipping 191 matching lines @@
   EXPECT_CALL(visitor, OnStreamPadding(1, 18));
   CHECK_EQ(18u, framer.ProcessInput(frame.data() + bytes_consumed, 18));
   CHECK_EQ(framer.state(), SpdyFramer::SPDY_READY_FOR_FRAME);
   CHECK_EQ(framer.spdy_framer_error(), SpdyFramer::SPDY_NO_ERROR);
 }
 
 TEST_P(SpdyFramerTest, ReadWindowUpdate) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdySerializedFrame control_frame(
       framer.SerializeWindowUpdate(SpdyWindowUpdateIR(1, 2)));
+  if (use_output_) {
+    EXPECT_TRUE(
+        framer.SerializeWindowUpdate(SpdyWindowUpdateIR(1, 2), &output_));
+    control_frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   TestSpdyVisitor visitor(SpdyFramer::DISABLE_COMPRESSION);
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   EXPECT_EQ(1u, visitor.last_window_update_stream_);
   EXPECT_EQ(2, visitor.last_window_update_delta_);
 }
 
 TEST_P(SpdyFramerTest, ReadCompressedPushPromise) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdyPushPromiseIR push_promise(42, 57);
   push_promise.SetHeader("foo", "bar");
   push_promise.SetHeader("bar", "foofoo");
   SpdySerializedFrame frame(framer.SerializePushPromise(push_promise));
+  if (use_output_) {
+    // Use a new framer to clean up the hpack dynamic table.
+    SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
+    EXPECT_TRUE(framer.SerializePushPromise(push_promise, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   TestSpdyVisitor visitor(SpdyFramer::ENABLE_COMPRESSION);
   visitor.SimulateInFramer(reinterpret_cast<unsigned char*>(frame.data()),
                            frame.size());
   EXPECT_EQ(42u, visitor.last_push_promise_stream_);
   EXPECT_EQ(57u, visitor.last_push_promise_promised_stream_);
   EXPECT_EQ(push_promise.header_block(), visitor.headers_);
 }
 
 TEST_P(SpdyFramerTest, ReadHeadersWithContinuation) {
   // frame-format off
@@ skipping 405 matching lines @@
   // Simulate the case where the stream id validation checks out.
   visitor.on_unknown_frame_result_ = true;
   visitor.SimulateInFramer(unknown_frame, arraysize(unknown_frame));
   EXPECT_EQ(0, visitor.error_count_);
 
   // Follow it up with a valid control frame to make sure we handle
   // subsequent frames correctly.
   SpdySettingsIR settings_ir;
   settings_ir.AddSetting(SETTINGS_HEADER_TABLE_SIZE, 10);
   SpdySerializedFrame control_frame(framer.SerializeSettings(settings_ir));
+  if (use_output_) {
+    EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+    control_frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   visitor.SimulateInFramer(
       reinterpret_cast<unsigned char*>(control_frame.data()),
       control_frame.size());
   EXPECT_EQ(0, visitor.error_count_);
   EXPECT_EQ(1u, static_cast<unsigned>(visitor.setting_count_));
   EXPECT_EQ(1u, static_cast<unsigned>(visitor.settings_ack_sent_));
 }
 
 TEST_P(SpdyFramerTest, ReadGarbageWithValidLength) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
@@ skipping 189 matching lines @@
   do {
     SCOPED_TRACE(testing::Message() << "Flags " << flags << std::hex
                                     << static_cast<int>(flags));
 
     testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
     SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
     framer.set_visitor(&visitor);
 
     SpdyRstStreamIR rst_stream(13, ERROR_CODE_CANCEL);
     SpdySerializedFrame frame(framer.SerializeRstStream(rst_stream));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeRstStream(rst_stream, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     SetFrameFlags(&frame, flags);
 
     EXPECT_CALL(visitor, OnRstStream(13, ERROR_CODE_CANCEL));
 
     framer.ProcessInput(frame.data(), frame.size());
 
     EXPECT_EQ(SpdyFramer::SPDY_READY_FOR_FRAME, framer.state());
     EXPECT_EQ(SpdyFramer::SPDY_NO_ERROR, framer.spdy_framer_error())
         << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
   } while (++flags != 0);
 }
 
 TEST_P(SpdyFramerTest, SettingsFrameFlags) {
   uint8_t flags = 0;
   do {
     SCOPED_TRACE(testing::Message() << "Flags " << flags << std::hex
                                     << static_cast<int>(flags));
 
     testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
     SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
     framer.set_visitor(&visitor);
 
     SpdySettingsIR settings_ir;
     settings_ir.AddSetting(SETTINGS_INITIAL_WINDOW_SIZE, 16);
     SpdySerializedFrame frame(framer.SerializeSettings(settings_ir));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeSettings(settings_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     SetFrameFlags(&frame, flags);
 
     if (flags & SETTINGS_FLAG_ACK) {
       EXPECT_CALL(visitor, OnError(_));
     } else {
       EXPECT_CALL(visitor, OnSettings(flags & SETTINGS_FLAG_ACK));
       EXPECT_CALL(visitor, OnSetting(SETTINGS_INITIAL_WINDOW_SIZE, 16));
       EXPECT_CALL(visitor, OnSettingsEnd());
     }
 
@@ skipping 17 matching lines @@
   do {
     SCOPED_TRACE(testing::Message() << "Flags " << flags << std::hex
                                     << static_cast<int>(flags));
 
     testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
     SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
     framer.set_visitor(&visitor);
 
     SpdyGoAwayIR goaway_ir(97, ERROR_CODE_NO_ERROR, "test");
     SpdySerializedFrame frame(framer.SerializeGoAway(goaway_ir));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeGoAway(goaway_ir, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     SetFrameFlags(&frame, flags);
 
     EXPECT_CALL(visitor, OnGoAway(97, ERROR_CODE_NO_ERROR));
 
     framer.ProcessInput(frame.data(), frame.size());
     EXPECT_EQ(SpdyFramer::SPDY_READY_FOR_FRAME, framer.state());
     EXPECT_EQ(SpdyFramer::SPDY_NO_ERROR, framer.spdy_framer_error())
         << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
   } while (++flags != 0);
 }
 
 TEST_P(SpdyFramerTest, HeadersFrameFlags) {
   uint8_t flags = 0;
   do {
     SCOPED_TRACE(testing::Message() << "Flags " << flags << std::hex
                                     << static_cast<int>(flags));
 
     testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
     SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
     framer.set_visitor(&visitor);
 
     SpdyHeadersIR headers_ir(57);
     if (flags & HEADERS_FLAG_PRIORITY) {
       headers_ir.set_weight(3);
       headers_ir.set_has_priority(true);
       headers_ir.set_parent_stream_id(5);
       headers_ir.set_exclusive(true);
     }
     headers_ir.SetHeader("foo", "bar");
-    SpdySerializedFrame frame(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     uint8_t set_flags = flags & ~HEADERS_FLAG_PADDED;
     SetFrameFlags(&frame, set_flags);
 
     // Expected callback values
     SpdyStreamId stream_id = 57;
     bool has_priority = false;
     SpdyPriority priority = 0;
     SpdyStreamId parent_stream_id = 0;
     bool exclusive = false;
     bool fin = flags & CONTROL_FLAG_FIN;
@@ skipping 125 matching lines @@
     framer.set_visitor(&visitor);
     framer.set_debug_visitor(&debug_visitor);
 
     EXPECT_CALL(debug_visitor, OnSendCompressedFrame(42, HEADERS, _, _));
     EXPECT_CALL(debug_visitor, OnReceiveCompressedFrame(42, HEADERS, _));
     EXPECT_CALL(visitor, OnHeaders(42, false, 0, 0, false, false, false));
     EXPECT_CALL(visitor, OnHeaderFrameStart(42)).Times(1);
 
     SpdyHeadersIR headers_ir(42);
     headers_ir.SetHeader("foo", "bar");
-    SpdySerializedFrame frame0(
-        SpdyFramerPeer::SerializeHeaders(&framer, headers_ir));
+    SpdySerializedFrame frame0(SpdyFramerPeer::SerializeHeaders(
+        &framer, headers_ir, use_output_ ? &output_ : nullptr));
     SetFrameFlags(&frame0, 0);
 
     SpdyContinuationIR continuation(42);
     SpdySerializedFrame frame(framer.SerializeContinuation(continuation));
+    if (use_output_) {
+      output_.Reset();
+      EXPECT_TRUE(framer.SerializeContinuation(continuation, &output_));
+      frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+    }
     SetFrameFlags(&frame, flags);
 
     EXPECT_CALL(debug_visitor, OnReceiveCompressedFrame(42, CONTINUATION, _));
     EXPECT_CALL(visitor, OnContinuation(42, flags & HEADERS_FLAG_END_HEADERS));
     bool end = flags & HEADERS_FLAG_END_HEADERS;
     if (end) {
       EXPECT_CALL(visitor, OnHeaderFrameEnd(42, _)).Times(1);
     }
 
     framer.ProcessInput(frame0.data(), frame0.size());
@@ skipping 96 matching lines @@
   const SpdyStreamId kStreamId = 0;
 
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   EXPECT_CALL(visitor, OnBlocked(kStreamId));
 
   SpdyBlockedIR blocked_ir(0);
   SpdySerializedFrame frame(framer.SerializeFrame(blocked_ir));
+  if (use_output_) {
+    output_.Reset();
+    EXPECT_TRUE(framer.SerializeFrame(blocked_ir, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   framer.ProcessInput(frame.data(), framer.GetBlockedSize());
 
   EXPECT_EQ(SpdyFramer::SPDY_READY_FOR_FRAME, framer.state());
   EXPECT_EQ(SpdyFramer::SPDY_NO_ERROR, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 TEST_P(SpdyFramerTest, OnAltSvcWithOrigin) {
   const SpdyStreamId kStreamId = 0;  // Stream id must be zero if origin given.
 
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   framer.set_visitor(&visitor);
 
   SpdyAltSvcWireFormat::AlternativeService altsvc1(
       "pid1", "host", 443, 5, SpdyAltSvcWireFormat::VersionVector());
   SpdyAltSvcWireFormat::AlternativeService altsvc2(
       "p\"=i:d", "h_\\o\"st", 123, 42, SpdyAltSvcWireFormat::VersionVector{24});
   SpdyAltSvcWireFormat::AlternativeServiceVector altsvc_vector;
   altsvc_vector.push_back(altsvc1);
   altsvc_vector.push_back(altsvc2);
   EXPECT_CALL(visitor,
               OnAltSvc(kStreamId, StringPiece("o_r|g!n"), altsvc_vector));
 
   SpdyAltSvcIR altsvc_ir(kStreamId);
   altsvc_ir.set_origin("o_r|g!n");
   altsvc_ir.add_altsvc(altsvc1);
   altsvc_ir.add_altsvc(altsvc2);
   SpdySerializedFrame frame(framer.SerializeFrame(altsvc_ir));
+  if (use_output_) {
+    output_.Reset();
+    EXPECT_TRUE(framer.SerializeFrame(altsvc_ir, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   framer.ProcessInput(frame.data(), frame.size());
 
   EXPECT_EQ(SpdyFramer::SPDY_READY_FOR_FRAME, framer.state());
   EXPECT_EQ(SpdyFramer::SPDY_NO_ERROR, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 TEST_P(SpdyFramerTest, OnAltSvcNoOrigin) {
   const SpdyStreamId kStreamId = 1;
 
@@ skipping 30 matching lines @@
 
   EXPECT_CALL(visitor, OnError(testing::Eq(&framer)));
 
   SpdyAltSvcIR altsvc_ir(kStreamId);
   altsvc_ir.set_origin("o1");
   altsvc_ir.add_altsvc(SpdyAltSvcWireFormat::AlternativeService(
       "pid1", "host", 443, 5, SpdyAltSvcWireFormat::VersionVector()));
   altsvc_ir.add_altsvc(SpdyAltSvcWireFormat::AlternativeService(
       "", "h1", 443, 10, SpdyAltSvcWireFormat::VersionVector()));
   SpdySerializedFrame frame(framer.SerializeFrame(altsvc_ir));
+  if (use_output_) {
+    output_.Reset();
+    EXPECT_TRUE(framer.SerializeFrame(altsvc_ir, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   framer.ProcessInput(frame.data(), frame.size());
 
   EXPECT_EQ(SpdyFramer::SPDY_ERROR, framer.state());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_CONTROL_FRAME, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 TEST_P(SpdyFramerTest, OnAltSvcBadLengths) {
   const char kType = static_cast<unsigned char>(ALTSVC);
   const unsigned char kFrameDataOriginLenLargerThanFrame[] = {
@@ skipping 102 matching lines @@
   EXPECT_EQ(SpdyFramer::SPDY_ERROR, framer.state());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_CONTROL_FRAME, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
 }
 
 // Tests handling of PRIORITY frames.
 TEST_P(SpdyFramerTest, ReadPriority) {
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   SpdyPriorityIR priority(3, 1, 256, false);
   SpdySerializedFrame frame(framer.SerializePriority(priority));
+  if (use_output_) {
+    output_.Reset();
+    EXPECT_TRUE(framer.SerializePriority(priority, &output_));
+    frame = SpdySerializedFrame(output_.Begin(), output_.Size(), false);
+  }
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   framer.set_visitor(&visitor);
   EXPECT_CALL(visitor, OnPriority(3, 1, 256, false));
   framer.ProcessInput(frame.data(), frame.size());
 
   EXPECT_EQ(SpdyFramer::SPDY_READY_FOR_FRAME, framer.state());
   EXPECT_EQ(SpdyFramer::SPDY_NO_ERROR, framer.spdy_framer_error())
       << SpdyFramer::SpdyFramerErrorToString(framer.spdy_framer_error());
   // TODO(mlavan): once we actually maintain a priority tree,
   // check that state is adjusted correctly.
@@ skipping 111 matching lines @@
   SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
   std::unique_ptr<TestSpdyVisitor> visitor(
       new TestSpdyVisitor(SpdyFramer::DISABLE_COMPRESSION));
   framer.set_visitor(visitor.get());
 
   // Create two input frames.
   SpdyHeadersIR headers(1);
   headers.SetHeader("alpha", "beta");
   headers.SetHeader("gamma", "charlie");
   headers.SetHeader("cookie", "key1=value1; key2=value2");
-  SpdySerializedFrame headers_frame(
-      SpdyFramerPeer::SerializeHeaders(&framer, headers));
+  SpdySerializedFrame headers_frame(SpdyFramerPeer::SerializeHeaders(
+      &framer, headers, use_output_ ? &output_ : nullptr));
 
   const char four_score[] = "Four score and seven years ago";
   SpdyDataIR four_score_ir(1, four_score);
   SpdySerializedFrame four_score_frame(framer.SerializeData(four_score_ir));
 
   // Put them in a single buffer (new variables here to make it easy to
   // change the order and type of frames).
   SpdySerializedFrame frame1 = std::move(headers_frame);
   SpdySerializedFrame frame2 = std::move(four_score_frame);
 
@@ skipping 99 matching lines @@
 
     EXPECT_EQ(1, visitor->data_frame_count_);
     EXPECT_EQ(strlen(four_score), static_cast<unsigned>(visitor->data_bytes_));
     EXPECT_EQ(0, visitor->headers_frame_count_);
   }
 }
 
 }  // namespace test
 
 }  // namespace net