gpu: Add a new extension CHROMIUM_deschedule.

gpu/command_buffer/service/in_process_command_buffer.cc

 // Copyright 2013 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 "gpu/command_buffer/service/in_process_command_buffer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <queue>
@@ skipping 403 matching lines @@
     return false;
   }
   *params.capabilities = decoder_->GetCapabilities();
 
   decoder_->SetFenceSyncReleaseCallback(
       base::Bind(&InProcessCommandBuffer::FenceSyncReleaseOnGpuThread,
                  base::Unretained(this)));
   decoder_->SetWaitFenceSyncCallback(
       base::Bind(&InProcessCommandBuffer::WaitFenceSyncOnGpuThread,
                  base::Unretained(this)));
+  decoder_->SetDescheduleUntilFinishedCallback(
+      base::Bind(&InProcessCommandBuffer::DescheduleUntilFinishedOnGpuThread,
+                 base::Unretained(this)));
+  decoder_->SetRescheduleAfterFinishedCallback(
+      base::Bind(&InProcessCommandBuffer::RescheduleAfterFinishedOnGpuThread,
+                 base::Unretained(this)));
 
   image_factory_ = params.image_factory;
 
   return true;
 }
 
 void InProcessCommandBuffer::Destroy() {
   CheckSequencedThread();
   client_thread_weak_ptr_factory_.InvalidateWeakPtrs();
   gpu_control_client_ = nullptr;
@@ skipping 441 matching lines @@
     fence_sync_wait_event_.Wait();
   }
 
   gles2::MailboxManager* mailbox_manager =
       decoder_->GetContextGroup()->mailbox_manager();
   SyncToken sync_token(namespace_id, 0, command_buffer_id, release);
   mailbox_manager->PullTextureUpdates(sync_token);
   return true;
 }
 
+void InProcessCommandBuffer::DescheduleUntilFinishedOnGpuThread() {
+  NOTIMPLEMENTED();
+}
+
+void InProcessCommandBuffer::RescheduleAfterFinishedOnGpuThread() {
+  NOTIMPLEMENTED();
+}
+
 void InProcessCommandBuffer::SignalSyncTokenOnGpuThread(
     const SyncToken& sync_token, const base::Closure& callback) {
   gpu::SyncPointManager* sync_point_manager = service_->sync_point_manager();
   DCHECK(sync_point_manager);
 
   scoped_refptr<gpu::SyncPointClientState> release_state =
       sync_point_manager->GetSyncPointClientState(
           sync_token.namespace_id(), sync_token.command_buffer_id());
 
   if (!release_state) {
@@ skipping 164 matching lines @@
     framebuffer_completeness_cache_ =
         new gpu::gles2::FramebufferCompletenessCache;
   return framebuffer_completeness_cache_;
 }
 
 SyncPointManager* GpuInProcessThread::sync_point_manager() {
   return sync_point_manager_;
 }
 
 }  // namespace gpu