Reduce FOR_EACH_OBSERVER usage in content/browser/renderer_host

content/browser/renderer_host/render_widget_host_view_base.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/render_widget_host_view_base.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
@@ skipping 62 matching lines @@
              : nullptr;
 }
 
 RenderWidgetHost* RenderWidgetHostViewBase::GetRenderWidgetHost() const {
   return nullptr;
 }
 
 void RenderWidgetHostViewBase::NotifyObserversAboutShutdown() {
   // Note: RenderWidgetHostInputEventRouter is an observer, and uses the
   // following notification to remove this view from its surface owners map.
-  FOR_EACH_OBSERVER(RenderWidgetHostViewBaseObserver,
-                    observers_,
-                    OnRenderWidgetHostViewBaseDestroyed(this));
+  for (auto& observer : observers_)
+    observer.OnRenderWidgetHostViewBaseDestroyed(this);
   // All observers are required to disconnect after they are notified.
   DCHECK(!observers_.might_have_observers());
 }
 
 bool RenderWidgetHostViewBase::OnMessageReceived(const IPC::Message& msg){
   return false;
 }
 
 void RenderWidgetHostViewBase::SetBackgroundColor(SkColor color) {
   background_color_ = color;
@@ skipping 427 matching lines @@
 
 bool RenderWidgetHostViewBase::IsChildFrameForTesting() const {
   return false;
 }
 
 cc::SurfaceId RenderWidgetHostViewBase::SurfaceIdForTesting() const {
   return cc::SurfaceId();
 }
 
 }  // namespace content