Shallow flush after calling beginSetPixels

cc/tile_manager.cc

 // Copyright 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 "cc/tile_manager.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
@@ skipping 537 matching lines @@
     // The component order may be bgra if we're uploading bgra pixels to rgba
     // texture. Mark contents as swizzled if image component order is
     // different than texture format.
     managed_tile_state.contents_swizzled =
         !PlatformColor::sameComponentOrder(tile->format_);
 
     // Tile resources can't be freed until upload has completed.
     managed_tile_state.can_be_freed = false;
 
     resource_pool_->resource_provider()->beginSetPixels(resource->id());
+    resource_pool_->resource_provider()->shallowFlushIfSupported();
     managed_tile_state.resource = resource.Pass();
     tiles_with_pending_set_pixels_.push(tile);
 
     ScheduleCheckForCompletedSetPixels();
   } else {
     resource_pool_->resource_provider()->releasePixelBuffer(resource->id());
     resource_pool_->ReleaseResource(resource.Pass());
     managed_tile_state.resource_is_being_initialized = false;
   }
 
   DispatchMoreTasks();
 }
 
 void TileManager::DidFinishTileInitialization(Tile* tile) {
   ManagedTileState& managed_tile_state = tile->managed_state();
   DCHECK(managed_tile_state.resource);
   managed_tile_state.resource_is_being_initialized = false;
   managed_tile_state.can_be_freed = true;
   for (int i = 0; i < NUM_TREES; ++i)
     drawable_tiles_in_bin_count_[managed_tile_state.bin[i]][i]++;
 }
 
 }  // namespace cc