Make sure buffers are large enough to hold the Result structure.

gpu/command_buffer/service/common_decoder.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 GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 134 matching lines @@
 
   // Typed version of GetAddressAndCheckSize.
   template <typename T>
   T GetSharedMemoryAs(unsigned int shm_id, unsigned int offset,
                       unsigned int size) {
     return static_cast<T>(GetAddressAndCheckSize(shm_id, offset, size));
   }
 
   void* GetAddressAndSize(unsigned int shm_id,
                           unsigned int offset,
+                          unsigned int minimum_size,
                           unsigned int* size);
 
   template <typename T>
   T GetSharedMemoryAndSizeAs(unsigned int shm_id,
                              unsigned int offset,
+                             unsigned int minimum_size,
                              unsigned int* size) {
-    return static_cast<T>(GetAddressAndSize(shm_id, offset, size));
+    return static_cast<T>(
+        GetAddressAndSize(shm_id, offset, minimum_size, size));
   }
 
   unsigned int GetSharedMemorySize(unsigned int shm_id, unsigned int offset);
 
   // Get the actual shared memory buffer.
   scoped_refptr<gpu::Buffer> GetSharedMemoryBuffer(unsigned int shm_id);
 
  protected:
   // Executes a common command.
   // Parameters:
@@ skipping 41 matching lines @@
   // A table of CommandInfo for all the commands.
   static const CommandInfo command_info[];
 
   DISALLOW_COPY_AND_ASSIGN(CommonDecoder);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_