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

net/http2/decoder/payload_decoders/goaway_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/goaway_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 41 matching lines @@
 
   void OnFrameSizeError(const Http2FrameHeader& header) override {
     VLOG(1) << "OnFrameSizeError: " << header;
     FrameError(header)->OnFrameSizeError(header);
   }
 };
 
 class GoAwayPayloadDecoderTest
     : public AbstractPayloadDecoderTest<GoAwayPayloadDecoder,
                                         GoAwayPayloadDecoderPeer,
-                                        Listener> {
- public:
-  static bool ApproveSizeForTruncated(size_t size) {
-    return size != Http2GoAwayFields::EncodedSize();
-  }
-};
+                                        Listener> {};
 
 // Confirm we get an error if the payload is not long enough to hold
 // Http2GoAwayFields.
 TEST_F(GoAwayPayloadDecoderTest, Truncated) {
+  auto approve_size = [](size_t size) {
+    return size != Http2GoAwayFields::EncodedSize();
+  };
   Http2FrameBuilder fb;
   fb.Append(Http2GoAwayFields(123, Http2ErrorCode::ENHANCE_YOUR_CALM));
-  EXPECT_TRUE(VerifyDetectsFrameSizeError(
-      0, fb.buffer(),
-      base::Bind(&GoAwayPayloadDecoderTest::ApproveSizeForTruncated)));
+  EXPECT_TRUE(VerifyDetectsFrameSizeError(0, fb.buffer(), approve_size));
 }
 
 class GoAwayOpaqueDataLengthTests
     : public GoAwayPayloadDecoderTest,
       public ::testing::WithParamInterface<uint32_t> {
  protected:
   GoAwayOpaqueDataLengthTests() : length_(GetParam()) {
     VLOG(1) << "################  length_=" << length_ << "  ################";
   }
 
@@ skipping 15 matching lines @@
                           RandStreamId());
   set_frame_header(header);
   FrameParts expected(header, opaque_data);
   expected.opt_goaway = goaway;
   ASSERT_TRUE(DecodePayloadAndValidateSeveralWays(fb.buffer(), expected));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net