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

gpu/command_buffer/client/cmd_buffer_helper.h

Index: gpu/command_buffer/client/cmd_buffer_helper.h
diff --git a/gpu/command_buffer/client/cmd_buffer_helper.h b/gpu/command_buffer/client/cmd_buffer_helper.h
index b6f45e2152eb2d1ab53a04eb7ae6e539b0f7240b..5fbf4629ef6ec8261a5bcb24ef77864b0345c5ce 100644
--- a/gpu/command_buffer/client/cmd_buffer_helper.h
+++ b/gpu/command_buffer/client/cmd_buffer_helper.h
@@ -214,6 +214,10 @@ class CommandBufferHelper {
     return command_buffer_;
   }
 
+  Buffer get_ring_buffer() const {
+    return ring_buffer_;
+  }
+
  private:
   // Waits until get changes, updating the value of get_.
   void WaitForGetChange();
@@ -224,9 +228,13 @@ class CommandBufferHelper {
         usable_entry_count_;
   }
 
+  bool AllocateRingBuffer();
+
   CommandBuffer* command_buffer_;
+  int32 ring_buffer_id_;
+  int32 ring_buffer_size_;
   Buffer ring_buffer_;
-  CommandBufferEntry *entries_;
+  CommandBufferEntry* entries_;
   int32 total_entry_count_;  // the total number of entries
   int32 usable_entry_count_;  // the usable number (ie, minus space for jump)
   int32 token_;