Remove usage of FOR_EACH_OBSERVER macro in blimp

blimp/client/core/contents/blimp_contents_impl.cc

 // Copyright 2016 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 "blimp/client/core/contents/blimp_contents_impl.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/supports_user_data.h"
 #include "blimp/client/core/contents/tab_control_feature.h"
@@ skipping 27 matching lines @@
       id_(id),
       ime_feature_(ime_feature),
       window_(window),
       tab_control_feature_(tab_control_feature) {
   blimp_contents_view_ =
       BlimpContentsViewImpl::Create(this, document_manager_.layer());
   ime_feature_->set_delegate(blimp_contents_view_->GetImeDelegate());
 }
 
 BlimpContentsImpl::~BlimpContentsImpl() {
-  FOR_EACH_OBSERVER(BlimpContentsObserver, observers_, BlimpContentsDying());
+  for (auto& observer : observers_)
+    observer.BlimpContentsDying();
   ime_feature_->set_delegate(nullptr);
 }
 
 #if defined(OS_ANDROID)
 
 base::android::ScopedJavaLocalRef<jobject> BlimpContentsImpl::GetJavaObject() {
   return GetBlimpContentsImplAndroid()->GetJavaObject();
 }
 
 BlimpContentsImplAndroid* BlimpContentsImpl::GetBlimpContentsImplAndroid() {
@@ skipping 37 matching lines @@
 void BlimpContentsImpl::Hide() {
   document_manager_.SetVisible(false);
   UMA_HISTOGRAM_BOOLEAN("Blimp.Tab.Visible", false);
 }
 
 bool BlimpContentsImpl::HasObserver(BlimpContentsObserver* observer) {
   return observers_.HasObserver(observer);
 }
 
 void BlimpContentsImpl::OnNavigationStateChanged() {
-  FOR_EACH_OBSERVER(BlimpContentsObserver, observers_,
-                    OnNavigationStateChanged());
+  for (auto& observer : observers_)
+    observer.OnNavigationStateChanged();
 }
 
 void BlimpContentsImpl::OnLoadingStateChanged(bool loading) {
-  FOR_EACH_OBSERVER(BlimpContentsObserver, observers_,
-                    OnLoadingStateChanged(loading));
+  for (auto& observer : observers_)
+    observer.OnLoadingStateChanged(loading);
 }
 
 void BlimpContentsImpl::OnPageLoadingStateChanged(bool loading) {
-  FOR_EACH_OBSERVER(BlimpContentsObserver, observers_,
-                    OnPageLoadingStateChanged(loading));
+  for (auto& observer : observers_)
+    observer.OnPageLoadingStateChanged(loading);
 }
 
 void BlimpContentsImpl::SetSizeAndScale(const gfx::Size& size,
                                         float device_pixel_ratio) {
   tab_control_feature_->SetSizeAndScale(size, device_pixel_ratio);
 }
 
 }  // namespace client
 }  // namespace blimp