gpu: Add sync token dependencies to flush metadata.

cc/raster/gpu_raster_buffer_provider.cc

 // Copyright 2014 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 "cc/raster/gpu_raster_buffer_provider.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 
@@ skipping 182 matching lines @@
 bool GpuRasterBufferProvider::IsResourceReadyToDraw(
     ResourceId resource_id) const {
   if (!async_worker_context_enabled_)
     return true;
 
   gpu::SyncToken sync_token =
       resource_provider_->GetSyncTokenForResources({resource_id});
   if (!sync_token.HasData())
     return true;
 
-  // IsSyncTokenSignalled is threadsafe, no need for worker context lock.
-  return worker_context_provider_->ContextSupport()->IsSyncTokenSignalled(
+  // IsSyncTokenSignaled is thread-safe, no need for worker context lock.
+  return worker_context_provider_->ContextSupport()->IsSyncTokenSignaled(
       sync_token);
 }
 
 uint64_t GpuRasterBufferProvider::SetReadyToDrawCallback(
     const ResourceProvider::ResourceIdArray& resource_ids,
     const base::Closure& callback,
     uint64_t pending_callback_id) const {
   if (!async_worker_context_enabled_)
     return 0;
 
@@ skipping 54 matching lines @@
   gl->OrderingBarrierCHROMIUM();
 
   // Generate sync token after the barrier for cross context synchronization.
   gpu::SyncToken resource_sync_token;
   gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, resource_sync_token.GetData());
   resource_lock->set_sync_token(resource_sync_token);
   resource_lock->set_synchronized(!async_worker_context_enabled_);
 }
 
 }  // namespace cc