Make LoadMonitoringExtensionHostQueue remove itself as an ExtensionHost observer at the correct tim…

extensions/browser/deferred_start_render_host_observer.h

 // Copyright 2015 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.
 
 #ifndef EXTENSIONS_BROWSER_DEFERRED_START_RENDER_HOST_OBSERVER_H_
 #define EXTENSIONS_BROWSER_DEFERRED_START_RENDER_HOST_OBSERVER_H_
 
 namespace extensions {
 class DeferredStartRenderHost;
 
 // Observer of DeferredStartRenderHost lifetime.
 //
 // Note that if BackgroundContents and ExtensionHost are unified
 // (crbug.com/77790), this can be replaced by ExtensionHostObserver.
 class DeferredStartRenderHostObserver {
  public:
   virtual ~DeferredStartRenderHostObserver() {}
 
   // Called when a DeferredStartRenderHost started loading.
-  virtual void OnDeferredStartRenderHostDidStartLoading(
+  virtual void OnDeferredStartRenderHostDidStartFirstLoad(
       const DeferredStartRenderHost* host) {}
 
   // Called when a DeferredStartRenderHost stopped loading.
-  virtual void OnDeferredStartRenderHostDidStopLoading(
+  virtual void OnDeferredStartRenderHostDidStopFirstLoad(
       const DeferredStartRenderHost* host) {}
 
   // Called when a DeferredStartRenderHost is destroyed.
   virtual void OnDeferredStartRenderHostDestroyed(
       const DeferredStartRenderHost* host) {}
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_DEFERRED_START_RENDER_HOST_OBSERVER_H_