Add Http2FrameDecoderAdapter.

net/spdy/spdy_framer.cc

Index: net/spdy/spdy_framer.cc
diff --git a/net/spdy/spdy_framer.cc b/net/spdy/spdy_framer.cc
index 0ec0236aa0cd9f6d5487cd80e6186739cc04edb0..501f4a459359d3b865118492980e8b9e689d5801 100644
--- a/net/spdy/spdy_framer.cc
+++ b/net/spdy/spdy_framer.cc
@@ -25,6 +25,7 @@
 #include "net/spdy/hpack/hpack_constants.h"
 #include "net/spdy/hpack/hpack_decoder.h"
 #include "net/spdy/hpack/hpack_decoder2.h"
+#include "net/spdy/http2_frame_decoder_adapter.h"
 #include "net/spdy/spdy_bitmasks.h"
 #include "net/spdy/spdy_bug_tracker.h"
 #include "net/spdy/spdy_flags.h"
@@ -68,9 +69,18 @@ void UnpackStreamDependencyValues(uint32_t packed,
 std::unique_ptr<SpdyFramerDecoderAdapter> DecoderAdapterFactory(
     SpdyFramer* outer) {
   if (FLAGS_use_nested_spdy_framer_decoder) {
+    if (FLAGS_use_http2_frame_decoder_adapter) {
+      SPDY_BUG << "Two SpdyFramerDecoderAdapter are enabled!";
+    }
     DVLOG(1) << "Creating NestedSpdyFramerDecoder.";
     return CreateNestedSpdyFramerDecoder(outer);
   }
+
+  if (FLAGS_use_http2_frame_decoder_adapter) {
+    DVLOG(1) << "Creating Http2FrameDecoderAdapter.";
+    return CreateHttp2FrameDecoderAdapter(outer);
+  }
+
   return nullptr;
 }