Revert 113479 - Revert "Revert 113250 - Add CommandBuffer::SetGetBuffer"

gpu/command_buffer/common/command_buffer.h

Index: gpu/command_buffer/common/command_buffer.h
===================================================================
--- gpu/command_buffer/common/command_buffer.h	(revision 113511)
+++ gpu/command_buffer/common/command_buffer.h	(working copy)
@@ -67,8 +67,14 @@
   }
 
   // Initialize the command buffer with the given size.
-  virtual bool Initialize() = 0;
+  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;
+
   // Returns the current status.
   virtual State GetState() = 0;
 
@@ -86,10 +92,6 @@
   // have been executed.
   virtual State FlushSync(int32 put_offset, int32 last_known_get) = 0;
 
-  // Sets the buffer commands are read from.
-  // Also resets the get and put offsets to 0.
-  virtual void SetGetBuffer(int32 transfer_buffer_id) = 0;
-
   // Sets the current get offset. This can be called from any thread.
   virtual void SetGetOffset(int32 get_offset) = 0;