Reduce FOR_EACH_OBSERVER usage in content/browser/renderer_host

content/browser/renderer_host/pepper/browser_ppapi_host_impl.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/pepper/browser_ppapi_host_impl.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/sparse_histogram.h"
 #include "content/browser/renderer_host/pepper/pepper_message_filter.h"
 #include "content/browser/tracing/trace_message_filter.h"
@@ skipping 53 matching lines @@
   ppapi_host_->AddHostFactoryFilter(std::unique_ptr<ppapi::host::HostFactory>(
       new ContentBrowserPepperHostFactory(this)));
 }
 
 BrowserPpapiHostImpl::~BrowserPpapiHostImpl() {
   // Notify the filter so it won't foward messages to us.
   message_filter_->OnHostDestroyed();
 
   // Notify instance observers about our impending destruction.
   for (auto& instance_data : instance_map_) {
-    FOR_EACH_OBSERVER(InstanceObserver, instance_data.second->observer_list,
-                      OnHostDestroyed());
+    for (auto& observer : instance_data.second->observer_list)
+      observer.OnHostDestroyed();
   }
 
   // Delete the host explicitly first. This shutdown will destroy the
   // resources, which may want to do cleanup in their destructors and expect
   // their pointers to us to be valid.
   ppapi_host_.reset();
 }
 
 ppapi::host::PpapiHost* BrowserPpapiHostImpl::GetPpapiHost() {
   return ppapi_host_.get();
@@ skipping 87 matching lines @@
   auto* data = instance_map_.get(instance);
   if (data)
     data->observer_list.RemoveObserver(observer);
 }
 
 void BrowserPpapiHostImpl::OnThrottleStateChanged(PP_Instance instance,
                                                   bool is_throttled) {
   auto* data = instance_map_.get(instance);
   if (data) {
     data->is_throttled = is_throttled;
-    FOR_EACH_OBSERVER(InstanceObserver, data->observer_list,
-                      OnThrottleStateChanged(is_throttled));
+    for (auto& observer : data->observer_list)
+      observer.OnThrottleStateChanged(is_throttled);
   }
 }
 
 bool BrowserPpapiHostImpl::IsThrottled(PP_Instance instance) const {
   auto* data = instance_map_.get(instance);
   if (data)
     return data->is_throttled;
 
   return false;
 }
@@ skipping 70 matching lines @@
         instance->second->renderer_data.render_frame_id;
     instance_data[i].document_url =
         instance->second->renderer_data.document_url;
     ++instance;
     ++i;
   }
   on_keepalive_callback_.Run(instance_data, profile_data_directory_);
 }
 
 }  // namespace content