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

cc/raster/zero_copy_tile_task_worker_pool.cc

Index: cc/raster/zero_copy_tile_task_worker_pool.cc
diff --git a/cc/raster/zero_copy_tile_task_worker_pool.cc b/cc/raster/zero_copy_tile_task_worker_pool.cc
index d42570a245bea273c0fce0d0231971eae31cc733..64fc5f453b387f84e4c7ed0ce3a7c02094615f1b 100644
--- a/cc/raster/zero_copy_tile_task_worker_pool.cc
+++ b/cc/raster/zero_copy_tile_task_worker_pool.cc
@@ -11,6 +11,7 @@
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/debug/traced_value.h"
 #include "cc/raster/raster_buffer.h"
+#include "cc/resources/platform_color.h"
 #include "cc/resources/resource.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
@@ -176,10 +177,14 @@ void ZeroCopyTileTaskWorkerPool::CheckForCompletedTasks() {
   completed_tasks_.clear();
 }
 
-ResourceFormat ZeroCopyTileTaskWorkerPool::GetResourceFormat() {
+ResourceFormat ZeroCopyTileTaskWorkerPool::GetResourceFormat() const {
   return resource_provider_->best_texture_format();
 }
 
+bool ZeroCopyTileTaskWorkerPool::GetResourceRequiresSwizzle() const {
+  return !PlatformColor::SameComponentOrder(GetResourceFormat());
+}
+
 scoped_ptr<RasterBuffer> ZeroCopyTileTaskWorkerPool::AcquireBufferForRaster(
     const Resource* resource,
     uint64_t resource_content_id,