cc, gpu: Use RGBA when using msaa on systems that don't support BGRA

cc/raster/bitmap_tile_task_worker_pool.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/bitmap_tile_task_worker_pool.h"
 
 #include <algorithm>
 
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/debug/traced_value.h"
 #include "cc/playback/raster_source.h"
 #include "cc/raster/raster_buffer.h"
+#include "cc/resources/platform_color.h"
 #include "cc/resources/resource.h"
 
 namespace cc {
 namespace {
 
 class RasterBufferImpl : public RasterBuffer {
  public:
   RasterBufferImpl(ResourceProvider* resource_provider,
                    const Resource* resource,
                    uint64_t resource_content_id,
@@ skipping 146 matching lines @@
 
     task->WillComplete();
     task->CompleteOnOriginThread(this);
     task->DidComplete();
 
     task->RunReplyOnOriginThread();
   }
   completed_tasks_.clear();
 }
 
-ResourceFormat BitmapTileTaskWorkerPool::GetResourceFormat() {
+ResourceFormat BitmapTileTaskWorkerPool::GetResourceFormat() const {
   return resource_provider_->best_texture_format();
 }
 
+bool BitmapTileTaskWorkerPool::GetResourceRequiresSwizzle() const {
+  return !PlatformColor::SameComponentOrder(GetResourceFormat());
+}
+
 scoped_ptr<RasterBuffer> BitmapTileTaskWorkerPool::AcquireBufferForRaster(
     const Resource* resource,
     uint64_t resource_content_id,
     uint64_t previous_content_id) {
   return scoped_ptr<RasterBuffer>(new RasterBufferImpl(
       resource_provider_, resource, resource_content_id, previous_content_id));
 }
 
 void BitmapTileTaskWorkerPool::ReleaseBufferForRaster(
     scoped_ptr<RasterBuffer> buffer) {
@@ skipping 21 matching lines @@
       new base::trace_event::TracedValue();
 
   state->BeginArray("tasks_pending");
   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set)
     state->AppendBoolean(tasks_pending_[task_set]);
   state->EndArray();
   return state;
 }
 
 }  // namespace cc