Add texture support in WebrtcVideoCapturerAdapter.

content/renderer/media/webrtc/webrtc_video_capturer_adapter.cc

Index: content/renderer/media/webrtc/webrtc_video_capturer_adapter.cc
diff --git a/content/renderer/media/webrtc/webrtc_video_capturer_adapter.cc b/content/renderer/media/webrtc/webrtc_video_capturer_adapter.cc
index 199cdff7538a42aafd901257dae07a394a9e974a..bb4ce24fc326e85126e572c424021bc5f27796e0 100644
--- a/content/renderer/media/webrtc/webrtc_video_capturer_adapter.cc
+++ b/content/renderer/media/webrtc/webrtc_video_capturer_adapter.cc
@@ -7,8 +7,10 @@
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/memory/aligned_memory.h"
+#include "content/renderer/media/native_handle_impl.h"
 #include "media/base/video_frame.h"
 #include "third_party/libyuv/include/libyuv/convert.h"
+#include "third_party/webrtc/system_wrappers/interface/ref_count.h"
 
 namespace content {
 
@@ -78,7 +80,8 @@ bool WebRtcVideoCapturerAdapter::GetBestCaptureFormat(
 void WebRtcVideoCapturerAdapter::OnFrameCaptured(
     const scoped_refptr<media::VideoFrame>& frame) {
   DCHECK(media::VideoFrame::I420 == frame->format() ||
-         media::VideoFrame::YV12 == frame->format());
+         media::VideoFrame::YV12 == frame->format() ||
+         media::VideoFrame::NATIVE_TEXTURE == frame->format());
   if (first_frame_timestamp_ == media::kNoTimestamp())
     first_frame_timestamp_ = frame->timestamp();
 
@@ -98,7 +101,11 @@ void WebRtcVideoCapturerAdapter::OnFrameCaptured(
   // Libjingle expects contiguous layout of image planes as input.
   // The only format where that is true in Chrome is I420 where the
   // coded_size == visible_rect().size().
-  if (frame->format() != media::VideoFrame::I420 ||
+  if (frame->format() == media::VideoFrame::NATIVE_TEXTURE) {
+    webrtc::RefCountImpl<NativeHandleImpl>* handle =
+              new webrtc::RefCountImpl<NativeHandleImpl>(frame.get());

[perkj_chrome, 2014/05/12 08:19:42]

nit:indentation

[wuchengli, 2014/05/12 09:41:29]

Done. Ran git cl format.

+    captured_frame.handle = handle;

[perkj_chrome, 2014/05/12 08:19:42]

How does this ensure |frame| is not released while libjingle is using it? 

[wuchengli, 2014/05/12 09:41:29]

NativeHandleImpl keeps a reference to |frame|.
https://code.google.com/p/chromium/codesearch#chromium/src/content/renderer/m...

+  } else if (frame->format() != media::VideoFrame::I420 ||
       frame->coded_size() != frame->visible_rect().size()) {
     // Cropping and or switching UV planes is needed.
     UpdateI420Buffer(frame);