Reduce FOR_EACH_OBSERVER usage in ui/

ui/android/window_android.cc

Index: ui/android/window_android.cc
diff --git a/ui/android/window_android.cc b/ui/android/window_android.cc
index 67c6cc1e4dad73072e6e88dc6f7bd723569301b0..d12cf8cacf88de21d254c7912568ad997883cb8d 100644
--- a/ui/android/window_android.cc
+++ b/ui/android/window_android.cc
@@ -55,9 +55,8 @@ void WindowAndroid::DestroyForTesting() {
 }
 
 void WindowAndroid::OnCompositingDidCommit() {
-  FOR_EACH_OBSERVER(WindowAndroidObserver,
-                    observer_list_,
-                    OnCompositingDidCommit());
+  for (auto& observer : observer_list_)
+    observer.OnCompositingDidCommit();
 }
 
 void WindowAndroid::AddObserver(WindowAndroidObserver* observer) {
@@ -74,16 +73,14 @@ void WindowAndroid::AttachCompositor(WindowAndroidCompositor* compositor) {
     DetachCompositor();
 
   compositor_ = compositor;
-  FOR_EACH_OBSERVER(WindowAndroidObserver,
-                    observer_list_,
-                    OnAttachCompositor());
+  for (auto& observer : observer_list_)
+    observer.OnAttachCompositor();
 }
 
 void WindowAndroid::DetachCompositor() {
   compositor_ = NULL;
-  FOR_EACH_OBSERVER(WindowAndroidObserver,
-                    observer_list_,
-                    OnDetachCompositor());
+  for (auto& observer : observer_list_)
+    observer.OnDetachCompositor();
   observer_list_.Clear();
 }
 
@@ -98,8 +95,8 @@ void WindowAndroid::SetNeedsAnimate() {
 }
 
 void WindowAndroid::Animate(base::TimeTicks begin_frame_time) {
-  FOR_EACH_OBSERVER(
-      WindowAndroidObserver, observer_list_, OnAnimate(begin_frame_time));
+  for (auto& observer : observer_list_)
+    observer.OnAnimate(begin_frame_time);
 }
 
 void WindowAndroid::OnVSync(JNIEnv* env,
@@ -109,10 +106,8 @@ void WindowAndroid::OnVSync(JNIEnv* env,
   base::TimeTicks frame_time(base::TimeTicks::FromInternalValue(time_micros));
   base::TimeDelta vsync_period(
       base::TimeDelta::FromMicroseconds(period_micros));
-  FOR_EACH_OBSERVER(
-      WindowAndroidObserver,
-      observer_list_,
-      OnVSync(frame_time, vsync_period));
+  for (auto& observer : observer_list_)
+    observer.OnVSync(frame_time, vsync_period);
   if (compositor_)
     compositor_->OnVSync(frame_time, vsync_period);
 }
@@ -120,18 +115,20 @@ void WindowAndroid::OnVSync(JNIEnv* env,
 void WindowAndroid::OnVisibilityChanged(JNIEnv* env,
                                         const JavaParamRef<jobject>& obj,
                                         bool visible) {
-  FOR_EACH_OBSERVER(WindowAndroidObserver, observer_list_,
-                    OnRootWindowVisibilityChanged(visible));
+  for (auto& observer : observer_list_)
+    observer.OnRootWindowVisibilityChanged(visible);
 }
 
 void WindowAndroid::OnActivityStopped(JNIEnv* env,
                                       const JavaParamRef<jobject>& obj) {
-  FOR_EACH_OBSERVER(WindowAndroidObserver, observer_list_, OnActivityStopped());
+  for (auto& observer : observer_list_)
+    observer.OnActivityStopped();
 }
 
 void WindowAndroid::OnActivityStarted(JNIEnv* env,
                                       const JavaParamRef<jobject>& obj) {
-  FOR_EACH_OBSERVER(WindowAndroidObserver, observer_list_, OnActivityStarted());
+  for (auto& observer : observer_list_)
+    observer.OnActivityStarted();
 }
 
 bool WindowAndroid::HasPermission(const std::string& permission) {