Use std::function instead of base::Callback in net/http2/.

net/http2/decoder/payload_decoders/headers_payload_decoder_test.cc

 // Copyright 2016 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/http2/decoder/payload_decoders/headers_payload_decoder.h"
 
 #include <stddef.h>
 
 #include <string>
 
-#include "base/bind.h"
 #include "base/logging.h"
 #include "net/http2/decoder/frame_parts.h"
 #include "net/http2/decoder/frame_parts_collector.h"
 #include "net/http2/decoder/http2_frame_decoder_listener.h"
 #include "net/http2/decoder/payload_decoders/payload_decoder_base_test_util.h"
 #include "net/http2/http2_constants.h"
 #include "net/http2/http2_structures_test_util.h"
 #include "net/http2/tools/http2_frame_builder.h"
 #include "net/http2/tools/http2_random.h"
 #include "net/http2/tools/random_decoder_test.h"
@@ skipping 74 matching lines @@
 
   void OnFrameSizeError(const Http2FrameHeader& header) override {
     VLOG(1) << "OnFrameSizeError: " << header;
     FrameError(header)->OnFrameSizeError(header);
   }
 };
 
 class HeadersPayloadDecoderTest
     : public AbstractPaddablePayloadDecoderTest<HeadersPayloadDecoder,
                                                 HeadersPayloadDecoderPeer,
-                                                Listener> {
- public:
-  static bool ApproveSizeForTruncated(size_t size) {
-    return size != Http2PriorityFields::EncodedSize();
-  }
-};
+                                                Listener> {};
 
 INSTANTIATE_TEST_CASE_P(VariousPadLengths,
                         HeadersPayloadDecoderTest,
                         ::testing::Values(0, 1, 2, 3, 4, 254, 255, 256));
 
 // Decode various sizes of (fake) HPACK payload, both with and without the
 // PRIORITY flag set.
 TEST_P(HeadersPayloadDecoderTest, VariousHpackPayloadSizes) {
   for (size_t hpack_size : {0, 1, 2, 3, 255, 256, 1024}) {
     LOG(INFO) << "###########   hpack_size = " << hpack_size << "  ###########";
@@ skipping 24 matching lines @@
       }
       EXPECT_TRUE(DecodePayloadAndValidateSeveralWays(frame_builder_.buffer(),
                                                       expected));
     }
   }
 }
 
 // Confirm we get an error if the PRIORITY flag is set but the payload is
 // not long enough, regardless of the amount of (valid) padding.
 TEST_P(HeadersPayloadDecoderTest, Truncated) {
+  auto approve_size = [](size_t size) {
+    return size != Http2PriorityFields::EncodedSize();
+  };
   Http2FrameBuilder fb;
   fb.Append(Http2PriorityFields(RandStreamId(), 1 + Random().Rand8(),
                                 Random().OneIn(2)));
   EXPECT_TRUE(VerifyDetectsMultipleFrameSizeErrors(
-      Http2FrameFlag::FLAG_PRIORITY, fb.buffer(),
-      base::Bind(&HeadersPayloadDecoderTest::ApproveSizeForTruncated),
+      Http2FrameFlag::FLAG_PRIORITY, fb.buffer(), approve_size,
       total_pad_length_));
 }
 
 // Confirm we get an error if the PADDED flag is set but the payload is not
 // long enough to hold even the Pad Length amount of padding.
 TEST_P(HeadersPayloadDecoderTest, PaddingTooLong) {
   EXPECT_TRUE(VerifyDetectsPaddingTooLong());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net