Disable automatic flushes on compositor contexts.

gpu/command_buffer/client/cmd_buffer_helper.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.
 
 // This file contains the command buffer helper class.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_CMD_BUFFER_HELPER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_CMD_BUFFER_HELPER_H_
 
 #include <string.h>
@@ skipping 26 matching lines @@
  public:
   explicit CommandBufferHelper(CommandBuffer* command_buffer);
   virtual ~CommandBufferHelper();
 
   // Initializes the CommandBufferHelper.
   // Parameters:
   //   ring_buffer_size: The size of the ring buffer portion of the command
   //       buffer.
   bool Initialize(int32 ring_buffer_size);
 
+  // Sets whether the command buffer should automatically flush periodically
+  // to try to increase performance. Defaults to true.
+  void SetAutomaticFlushes(bool enabled);
+
   // True if the context is lost.
   bool IsContextLost();
 
   // Asynchronously flushes the commands, setting the put pointer to let the
   // buffer interface know that new commands have been added. After a flush
   // returns, the command buffer service is aware of all pending commands.
   void Flush();
 
   // Flushes the commands, setting the put pointer to let the buffer interface
   // know that new commands have been added. After a flush returns, the command
@@ skipping 228 matching lines @@
   Buffer ring_buffer_;
   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_;
   int32 put_;
   int32 last_put_sent_;
   int commands_issued_;
   bool usable_;
   bool context_lost_;
+  bool flush_automatically_;
 
   // Using C runtime instead of base because this file cannot depend on base.
   clock_t last_flush_time_;
 
   friend class CommandBufferHelperTest;
   DISALLOW_COPY_AND_ASSIGN(CommandBufferHelper);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_CMD_BUFFER_HELPER_H_