Remove memset from VideoFrame and mark buffer as unpoisoned

media/base/video_frame.h

 // 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.
 
 #ifndef MEDIA_BASE_VIDEO_FRAME_H_
 #define MEDIA_BASE_VIDEO_FRAME_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 268 matching lines @@
   // Allocates a hole frame.
   static scoped_refptr<VideoFrame> CreateHoleFrame(const gfx::Size& size);
 #endif  // defined(VIDEO_HOLE)
 
   static size_t NumPlanes(Format format);
 
   // Returns the required allocation size for a (tightly packed) frame of the
   // 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);
+
   // Returns the plane gfx::Size (in bytes) for a plane of the given coded size
   // and format.
   static gfx::Size PlaneSize(Format format,
                              size_t plane,
                              const gfx::Size& coded_size);
 
   // Returns horizontal bits per pixel for given |plane| and |format|.
   static int PlaneHorizontalBitsPerPixel(Format format, size_t plane);
 
   // Returns bits per pixel for given |plane| and |format|.
@@ skipping 213 matching lines @@
   uint32 release_sync_point_;
 
   VideoFrameMetadata metadata_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoFrame);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_FRAME_H_