Add CommandBuffer::SetGetBuffer

gpu/command_buffer/common/command_buffer.h

Index: gpu/command_buffer/common/command_buffer.h
diff --git a/gpu/command_buffer/common/command_buffer.h b/gpu/command_buffer/common/command_buffer.h
index 76124c8336b405a098a62958e95af823a1b5faa4..163761548331304f8018c77309f4739e5a309441 100644
--- a/gpu/command_buffer/common/command_buffer.h
+++ b/gpu/command_buffer/common/command_buffer.h
@@ -67,13 +67,7 @@ class CommandBuffer {
   }
 
   // Initialize the command buffer with the given size.
-  virtual bool Initialize(int32 size) = 0;
-
-  // Initialize the command buffer using the given preallocated buffer.
-  virtual bool Initialize(base::SharedMemory* buffer, int32 size) = 0;
-
-  // Gets the ring buffer for the command buffer.
-  virtual Buffer GetRingBuffer() = 0;
+  virtual bool Initialize() = 0;
 
   // Returns the current status.
   virtual State GetState() = 0;
@@ -92,6 +86,10 @@ class CommandBuffer {
   // have been executed.
   virtual State FlushSync(int32 put_offset, int32 last_known_get) = 0;
 
+  // Sets the buffer commands are read from.

[Ken Russell (switch to Gerrit), 2011/11/21 18:04:10]

Could you document that the passed ID is one previously returned from
CreateTransferBuffer? shm_id is a slightly confusing name -- transfer_buffer_id
might be better and avoid the need for the additional comment.

+  // Also resets the get and put offsets to 0.
+  virtual void SetGetBuffer(int32 shm_id) = 0;
+
   // Sets the current get offset. This can be called from any thread.
   virtual void SetGetOffset(int32 get_offset) = 0;