Add reference-counting for mailbox textures.

content/common/gpu/gpu_command_buffer_stub.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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/hash.h"
 #include "base/shared_memory.h"
 #include "base/time.h"
 #include "build/build_config.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_channel_manager.h"
 #include "content/common/gpu/gpu_command_buffer_stub.h"
 #include "content/common/gpu/gpu_memory_manager.h"
 #include "content/common/gpu/gpu_memory_tracking.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/gpu/gpu_watchdog.h"
 #include "content/common/gpu/image_transport_surface.h"
 #include "content/common/gpu/media/gpu_video_decode_accelerator.h"
 #include "content/common/gpu/sync_point_manager.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/gl_context_virtual.h"
+#include "gpu/command_buffer/service/mailbox_manager.h"
 #include "gpu/command_buffer/service/memory_tracking.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_switches.h"
 
 #if defined(OS_WIN)
 #include "content/public/common/sandbox_init.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "content/common/gpu/stream_texture_manager_android.h"
@@ skipping 895 matching lines @@
     // to be made current before calling methods on the surface.
     if (surface_ && MakeCurrent())
       surface_->SetFrontbufferAllocation(
           allocation.browser_allocation.suggest_have_frontbuffer);
   }
 
   last_memory_allocation_valid_ = true;
   last_memory_allocation_ = allocation;
 }
 
+void GpuCommandBufferStub::OnDestroySurface(int surface_id) {
+  gpu::gles2::MailboxManager* manager = context_group_->mailbox_manager();
+  if (manager) {
+    manager->RemoveTexturesFromPool(
+        std::make_pair(gpu::gles2::MailboxManager::TEXTURE_POOL_FOR_SURFACE,
+                       surface_id),
+        MakeCurrent());
+  }
+}
+
 }  // namespace content