gpu: Simplify the error handling during gpu memory buffer allocation.

content/browser/gpu/gpu_process_host.cc

 // 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.
 
 #include "content/browser/gpu/gpu_process_host.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 748 matching lines @@
                EstablishChannelStatus::SUCCESS);
 }
 
 void GpuProcessHost::OnGpuMemoryBufferCreated(
     const gfx::GpuMemoryBufferHandle& handle) {
   TRACE_EVENT0("gpu", "GpuProcessHost::OnGpuMemoryBufferCreated");
 
   DCHECK(!create_gpu_memory_buffer_requests_.empty());
   auto callback = create_gpu_memory_buffer_requests_.front();
   create_gpu_memory_buffer_requests_.pop();
-  callback.Run(handle);
+  callback.Run(handle, BufferCreationStatus::SUCCESS);
 }
 
 #if defined(OS_ANDROID)
 void GpuProcessHost::OnDestroyingVideoSurfaceAck() {
   TRACE_EVENT0("gpu", "GpuProcessHost::OnDestroyingVideoSurfaceAck");
   if (!send_destroying_video_surface_done_cb_.is_null())
     base::ResetAndReturn(&send_destroying_video_surface_done_cb_).Run();
 }
 #endif
 
@@ skipping 264 matching lines @@
   while (!channel_requests_.empty()) {
     auto callback = channel_requests_.front();
     channel_requests_.pop();
     callback.Run(IPC::ChannelHandle(), gpu::GPUInfo(),
                  EstablishChannelStatus::GPU_HOST_INVALID);
   }
 
   while (!create_gpu_memory_buffer_requests_.empty()) {
     auto callback = create_gpu_memory_buffer_requests_.front();
     create_gpu_memory_buffer_requests_.pop();
-    callback.Run(gfx::GpuMemoryBufferHandle());
+    callback.Run(gfx::GpuMemoryBufferHandle(),
+                 BufferCreationStatus::GPU_HOST_INVALID);
   }
 
   if (!send_destroying_video_surface_done_cb_.is_null())
     base::ResetAndReturn(&send_destroying_video_surface_done_cb_).Run();
 }
 
 void GpuProcessHost::BlockLiveOffscreenContexts() {
   for (std::multiset<GURL>::iterator iter =
            urls_with_live_offscreen_contexts_.begin();
        iter != urls_with_live_offscreen_contexts_.end(); ++iter) {
@@ skipping 112 matching lines @@
   if (!cache.get())
     return;
 
   cache->set_shader_loaded_callback(base::Bind(&GpuProcessHost::LoadedShader,
                                                weak_ptr_factory_.GetWeakPtr()));
 
   client_id_to_shader_cache_[client_id] = cache;
 }
 
 }  // namespace content