Zero initialize the first allocation of a VideoFrame.

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 "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/format_macros.h"
 #include "base/memory/aligned_memory.h"
@@ skipping 290 matching lines @@
     EXPECT_EQ(sync_point, mailbox_holder->sync_point);
 
     frame->AppendReleaseSyncPoint(release_sync_points[0]);
     frame->AppendReleaseSyncPoint(release_sync_points[1]);
     frame->AppendReleaseSyncPoint(release_sync_points[2]);
     EXPECT_EQ(sync_point, mailbox_holder->sync_point);
   }
   EXPECT_EQ(release_sync_points, called_sync_points);
 }
 
+TEST(VideoFrame, ZeroInitialized) {
+  const int kWidth = 64;
+  const int kHeight = 48;
+  const base::TimeDelta kTimestamp = base::TimeDelta::FromMicroseconds(1337);
+
+  gfx::Size size(kWidth, kHeight);
+  scoped_refptr<media::VideoFrame> frame = VideoFrame::CreateFrame(
+      media::VideoFrame::YV12, size, gfx::Rect(size), size, kTimestamp);
+
+  for (size_t i = 0; i < VideoFrame::NumPlanes(frame->format()); ++i)
+    EXPECT_EQ(0, frame->data(i)[0]);
+}
+
 }  // namespace media