Replace FOR_EACH_OBSERVER in c/b/chromeos with range-based for

chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc

Index: chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
diff --git a/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc b/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
index 2aaa80861fe571ff0b70829e0942ff4c90df632e..5a8248e06cc4e7b943c9a16bb50b2d9031549464 100644
--- a/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
+++ b/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
@@ -55,8 +55,8 @@ void CandidateWindowControllerImpl::InitCandidateWindowView() {
   views::Widget* widget = candidate_window_view_->InitWidget();
   widget->AddObserver(this);
   widget->Show();
-  FOR_EACH_OBSERVER(CandidateWindowController::Observer, observers_,
-                    CandidateWindowOpened());
+  for (auto& observer : observers_)
+    observer.CandidateWindowOpened();
 }
 
 void CandidateWindowControllerImpl::Hide() {
@@ -168,8 +168,8 @@ void CandidateWindowControllerImpl::UpdatePreeditText(
 }
 
 void CandidateWindowControllerImpl::OnCandidateCommitted(int index) {
-  FOR_EACH_OBSERVER(CandidateWindowController::Observer, observers_,
-                    CandidateClicked(index));
+  for (auto& observer : observers_)
+    observer.CandidateClicked(index);
 }
 
 void CandidateWindowControllerImpl::OnWidgetClosing(views::Widget* widget) {
@@ -181,8 +181,8 @@ void CandidateWindowControllerImpl::OnWidgetClosing(views::Widget* widget) {
     widget->RemoveObserver(this);
     candidate_window_view_->RemoveObserver(this);
     candidate_window_view_ = NULL;
-    FOR_EACH_OBSERVER(CandidateWindowController::Observer, observers_,
-                      CandidateWindowClosed());
+    for (auto& observer : observers_)
+      observer.CandidateWindowClosed();
   }
 }