Reduce FOR_EACH_OBSERVER usage in content/browser/renderer_host

content/browser/renderer_host/compositor_impl_android.cc

 // Copyright (c) 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 "content/browser/renderer_host/compositor_impl_android.h"
 
 #include <android/bitmap.h>
 #include <android/native_window_jni.h>
 #include <stdint.h>
 #include <unordered_set>
@@ skipping 793 matching lines @@
   readback_layer_tree_->AddChild(layer);
 }
 
 void CompositorImpl::RequestCopyOfOutputOnRootLayer(
     std::unique_ptr<cc::CopyOutputRequest> request) {
   root_window_->GetLayer()->RequestCopyOfOutput(std::move(request));
 }
 
 void CompositorImpl::OnVSync(base::TimeTicks frame_time,
                              base::TimeDelta vsync_period) {
-  FOR_EACH_OBSERVER(VSyncObserver, observer_list_,
-                    OnVSync(frame_time, vsync_period));
+  for (auto& observer : observer_list_)
+    observer.OnVSync(frame_time, vsync_period);
   if (needs_begin_frames_)
     root_window_->RequestVSyncUpdate();
 }
 
 void CompositorImpl::OnNeedsBeginFramesChange(bool needs_begin_frames) {
   if (needs_begin_frames_ == needs_begin_frames)
     return;
 
   needs_begin_frames_ = needs_begin_frames;
   if (needs_begin_frames_)
@@ skipping 11 matching lines @@
 
 cc::FrameSinkId CompositorImpl::GetFrameSinkId() {
   return frame_sink_id_;
 }
 
 bool CompositorImpl::HavePendingReadbacks() {
   return !readback_layer_tree_->children().empty();
 }
 
 }  // namespace content