Move SoftwareFrameData overflow checks to the IPC code.

cc/output/software_frame_data.h

 // Copyright 2013 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 CC_OUTPUT_SOFTWARE_FRAME_DATA_H_
 #define CC_OUTPUT_SOFTWARE_FRAME_DATA_H_
 
 #include "base/memory/shared_memory.h"
+#include "base/numerics/safe_math.h"
 #include "cc/base/cc_export.h"
 #include "ui/gfx/rect.h"
 
 namespace cc {
 
 class CC_EXPORT SoftwareFrameData {
  public:
   SoftwareFrameData();
   ~SoftwareFrameData();
 
   unsigned id;
   gfx::Size size;
   gfx::Rect damage_rect;
   base::SharedMemoryHandle handle;
+
+  size_t SizeInBytes() const;
+  base::CheckedNumeric<size_t> CheckedSizeInBytes() const;
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_SOFTWARE_FRAME_DATA_H_