IPC to generate mailbox names on the GPU process IO thread.

content/common/gpu/client/command_buffer_proxy_impl.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 CONTENT_COMMON_GPU_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_
 #define CONTENT_COMMON_GPU_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_
 
 #if defined(ENABLE_GPU)
 
 #include <map>
@@ skipping 92 matching lines @@
   // Makes this command buffer wait on a sync point. This command buffer will be
   // unscheduled until the command buffer that inserted that sync point reaches
   // it, or gets destroyed.
   void WaitSyncPoint(uint32);
 
   // Makes this command buffer invoke a task when a sync point is reached, or
   // the command buffer that inserted that sync point is destroyed.
   bool SignalSyncPoint(uint32 sync_point,
                        const base::Closure& callback);
 
+  // Generates n unique mailbox names that can be used with
+  // GL_texture_mailbox_CHROMIUM. Unlike genMailboxCHROMIUM, this IPC is
+  // handled only on the GPU process' IO thread, and so is not effectively
+  // a finish.
+  bool GenerateMailboxNames(unsigned num, std::vector<std::string>* names);
+
   // Set a task that will be invoked the next time the window becomes invalid
   // and needs to be repainted. Takes ownership of task.
   void SetNotifyRepaintTask(const base::Closure& callback);
 
   // Sends an IPC message with the new state of surface visibility.
   bool SetSurfaceVisible(bool visible);
 
   void SetOnConsoleMessageCallback(
       const GpuConsoleMessageCallback& callback);
 
@@ skipping 69 matching lines @@
   int32 state_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandBufferProxyImpl);
 };
 
 }  // namespace content
 
 #endif  // ENABLE_GPU
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_