Hide BrowsingInstance from all but SiteInstance, as intended by design.

chrome/browser/renderer_host/chrome_render_view_host_observer.cc

 // Copyright (c) 2011 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 "chrome/browser/renderer_host/chrome_render_view_host_observer.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/dom_operation_notification_details.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/net/predictor.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
-#include "content/browser/browsing_instance.h"
 #include "content/browser/child_process_security_policy.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/site_instance.h"
 #include "content/public/browser/notification_service.h"
 
 ChromeRenderViewHostObserver::ChromeRenderViewHostObserver(
     RenderViewHost* render_view_host, chrome_browser_net::Predictor* predictor)
     : content::RenderViewHostObserver(render_view_host),
       predictor_(predictor) {
   SiteInstance* site_instance = render_view_host->site_instance();
   profile_ = Profile::FromBrowserContext(
-      site_instance->browsing_instance()->browser_context());
+      site_instance->GetBrowserContext());
 
   InitRenderViewHostForExtensions();
 }
 
 ChromeRenderViewHostObserver::~ChromeRenderViewHostObserver() {
   RemoveRenderViewHostForExtensions(render_view_host());
 }
 
 void ChromeRenderViewHostObserver::RenderViewHostInitialized() {
   InitRenderViewForExtensions();
@@ skipping 130 matching lines @@
       content::Source<RenderViewHost>(render_view_host()),
       content::Details<DomOperationNotificationDetails>(&details));
 }
 
 void ChromeRenderViewHostObserver::OnFocusedEditableNodeTouched() {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_FOCUSED_EDITABLE_NODE_TOUCHED,
       content::Source<RenderViewHost>(render_view_host()),
       content::NotificationService::NoDetails());
 }