cc: Merge TileTaskRunner to TileTaskWorkerPool.

cc/raster/tile_task_worker_pool.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 "cc/raster/tile_task_worker_pool.h"
 
 #include <stddef.h>
 
 #include "base/trace_event/trace_event.h"
 #include "cc/playback/raster_source.h"
 #include "cc/raster/texture_compressor.h"
+#include "cc/resources/platform_color.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkSurface.h"
 
 namespace cc {
 
 TileTaskWorkerPool::TileTaskWorkerPool() {}
 
 TileTaskWorkerPool::~TileTaskWorkerPool() {}
 
 // static
@@ skipping 116 matching lines @@
     case RGB_565:
     case RED_8:
     case LUMINANCE_F16:
       NOTREACHED();
       return;
   }
 
   NOTREACHED();
 }
 
+bool TileTaskWorkerPool::ResourceFormatRequiresSwizzle(ResourceFormat format) {
+  switch (format) {
+    case RGBA_8888:
+    case BGRA_8888:
+      // Initialize resource using the preferred PlatformColor component
+      // order and swizzle in the shader instead of in software.
+      return !PlatformColor::SameComponentOrder(format);
+    case RGBA_4444:
+    case ETC1:
+    case ALPHA_8:
+    case LUMINANCE_8:
+    case RGB_565:
+    case RED_8:
+    case LUMINANCE_F16:
+      return false;
+  }
+  NOTREACHED();
+  return false;
+}
+
 }  // namespace cc