[SPDY] Incorporate latest framing changes from HTTP2 into SPDY 4 as SPDY 4a2.

net/spdy/spdy_frame_builder_test.cc

 // Copyright (c) 2013 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_frame_builder.h"
 
 #include "net/spdy/spdy_framer.h"
 #include "net/spdy/spdy_protocol.h"
 #include "testing/platform_test.h"
 
@@ skipping 35 matching lines @@
                         ::testing::Values(SPDY2, SPDY3, SPDY4));
 
 TEST_P(SpdyFrameBuilderTest, RewriteLength) {
   // Create an empty SETTINGS frame both via framer and manually via builder.
   // The one created via builder is initially given the incorrect length, but
   // then is corrected via RewriteLength().
   SpdyFramer framer(spdy_version_);
   SettingsMap settings;
   scoped_ptr<SpdyFrame> expected(framer.CreateSettings(settings));
   SpdyFrameBuilder builder(expected->size() + 1);
-  builder.WriteControlFrameHeader(framer, SETTINGS, 0);
+  if (spdy_version_ < 4) {
+    builder.WriteControlFrameHeader(framer, SETTINGS, 0);
+  } else {
+    builder.WriteFramePrefix(framer, SETTINGS, 0, 0);
+  }
   builder.WriteUInt32(0); // Write the number of settings.
   EXPECT_TRUE(builder.GetWritableBuffer(1) != NULL);
   builder.RewriteLength(framer);
   scoped_ptr<SpdyFrame> built(builder.take());
   EXPECT_EQ(base::StringPiece(expected->data(), expected->size()),
             base::StringPiece(built->data(), expected->size()));
 }
 
 }  // namespace net