Handle Alpha channel in Canvas capture

media/base/video_frame_unittest.cc

 // Copyright (c) 2012 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 "media/base/video_frame.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 224 matching lines @@
   bool done_callback_was_run = false;
   {
     scoped_refptr<media::VideoFrame> wrapped_frame =
         VideoFrame::CreateBlackFrame(gfx::Size(kWidth, kHeight));
     ASSERT_TRUE(wrapped_frame.get());
 
     gfx::Rect visible_rect(1, 1, 1, 1);
     gfx::Size natural_size = visible_rect.size();
     wrapped_frame->metadata()->SetTimeDelta(
         media::VideoFrameMetadata::FRAME_DURATION, kFrameDuration);
-    frame = media::VideoFrame::WrapVideoFrame(wrapped_frame, visible_rect,
-                                              natural_size);
+    frame = media::VideoFrame::WrapVideoFrame(
+        wrapped_frame, wrapped_frame->format(), visible_rect, natural_size);
     frame->AddDestructionObserver(base::Bind(
         &FrameNoLongerNeededCallback, wrapped_frame, &done_callback_was_run));
-
     EXPECT_EQ(wrapped_frame->coded_size(), frame->coded_size());
     EXPECT_EQ(wrapped_frame->data(media::VideoFrame::kYPlane),
               frame->data(media::VideoFrame::kYPlane));
     EXPECT_NE(wrapped_frame->visible_rect(), frame->visible_rect());
     EXPECT_EQ(visible_rect, frame->visible_rect());
     EXPECT_NE(wrapped_frame->natural_size(), frame->natural_size());
     EXPECT_EQ(natural_size, frame->natural_size());
 
     // Verify metadata was copied to the wrapped frame.
     base::TimeDelta frame_duration;
@@ skipping 247 matching lines @@
 
   for (int i = 0; i < VideoFrameMetadata::NUM_KEYS; ++i) {
     const VideoFrameMetadata::Key key = static_cast<VideoFrameMetadata::Key>(i);
     int value = -1;
     EXPECT_TRUE(result.GetInteger(key, &value));
     EXPECT_EQ(i, value);
   }
 }
 
 }  // namespace media