Remove RenderViewHost parameter from WebContentsObserver::Did{Start|Stop}Loading.

extensions/browser/extension_host.cc

 // Copyright 2014 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 "extensions/browser/extension_host.h"
 
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/profiler/scoped_tracker.h"
@@ skipping 249 matching lines @@
 
   // TODO(aa): This is suspicious. There can be multiple views in an extension,
   // and they aren't all going to use ExtensionHost. This should be in someplace
   // more central, like EPM maybe.
   content::NotificationService::current()->Notify(
       extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
       content::Source<BrowserContext>(browser_context_),
       content::Details<ExtensionHost>(this));
 }
 
-void ExtensionHost::DidStartLoading(content::RenderViewHost* render_view_host) {
+void ExtensionHost::DidStartLoading() {
   if (!has_loaded_once_) {
     FOR_EACH_OBSERVER(DeferredStartRenderHostObserver,
                       deferred_start_render_host_observer_list_,
                       OnDeferredStartRenderHostDidStartFirstLoad(this));
   }
 }
 
-void ExtensionHost::DidStopLoading(content::RenderViewHost* render_view_host) {
+void ExtensionHost::DidStopLoading() {
   // Only record UMA for the first load. Subsequent loads will likely behave
   // quite different, and it's first load we're most interested in.
   bool first_load = !has_loaded_once_;
   has_loaded_once_ = true;
   if (first_load) {
     RecordStopLoadingUMA();
     OnDidStopFirstLoad();
     content::NotificationService::current()->Notify(
         extensions::NOTIFICATION_EXTENSION_HOST_DID_STOP_FIRST_LOAD,
         content::Source<BrowserContext>(browser_context_),
@@ skipping 180 matching lines @@
       UMA_HISTOGRAM_MEDIUM_TIMES("Extensions.BackgroundPageLoadTime2",
                                  load_start_->Elapsed());
     }
   } else if (extension_host_type_ == VIEW_TYPE_EXTENSION_POPUP) {
     UMA_HISTOGRAM_MEDIUM_TIMES("Extensions.PopupLoadTime2",
                                load_start_->Elapsed());
   }
 }
 
 }  // namespace extensions