Remove memset from VideoFrame and mark buffer as unpoisoned

media/base/video_frame.h

Index: media/base/video_frame.h
diff --git a/media/base/video_frame.h b/media/base/video_frame.h
index 2588e46e99d96b6dd8156feee0da1450e241ca90..e66ffffafc8a6bd5a6f950536e3f7e96cd8679bc 100644
--- a/media/base/video_frame.h
+++ b/media/base/video_frame.h
@@ -286,6 +286,10 @@ class MEDIA_EXPORT VideoFrame : public base::RefCountedThreadSafe<VideoFrame> {
   // given coded size and format.
   static size_t AllocationSize(Format format, const gfx::Size& coded_size);
 
+  // Returns the actual allocation size for a YUV frame that is created by
+  // CreateFrame() method.
+  static size_t AlignedAllocationSize(const scoped_refptr<VideoFrame>& frame);

[miu, 2015/07/09 23:31:34]

How is this any different from frame->coded_size().GetArea()?  Seems like it
computes the same thing.

[emircan, 2015/07/10 00:22:53]

VideoFrame::AllocateYUV() is using constants kFrameSizePadding and
kFrameSizeAlignment, and ends up being greater than that.

https://code.google.com/p/chromium/codesearch#chromium/src/media/base/video_f...

+
   // Returns the plane gfx::Size (in bytes) for a plane of the given coded size
   // and format.
   static gfx::Size PlaneSize(Format format,