Revert of gpu: guarantee to match pending GBM buffer request to actual GBM handle

content/browser/gpu/gpu_process_host.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_BROWSER_GPU_GPU_PROCESS_HOST_H_
 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 213 matching lines @@
   std::string GetShaderPrefixKey(const std::string& shader);
 
   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
   int host_id_;
 
   // These are the channel requests that we have already sent to
   // the GPU process, but haven't heard back about yet.
   std::queue<EstablishChannelCallback> channel_requests_;
 
   // The pending create gpu memory buffer requests we need to reply to.
-  base::flat_map<gfx::GpuMemoryBufferId, CreateGpuMemoryBufferCallback>
-      create_gpu_memory_buffer_requests_;
+  std::queue<CreateGpuMemoryBufferCallback> create_gpu_memory_buffer_requests_;
 
   // A callback to signal the completion of a SendDestroyingVideoSurface call.
   base::Closure send_destroying_video_surface_done_cb_;
 
   // Qeueud messages to send when the process launches.
   std::queue<IPC::Message*> queued_messages_;
 
   // Whether the GPU process is valid, set to false after Send() failed.
   bool valid_;
 
@@ skipping 52 matching lines @@
   gpu::GpuProcessHostActivityFlags activity_flags_;
 
   base::WeakPtrFactory<GpuProcessHost> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_