[NoStatePrefetch] Add performance histograms.

chrome/browser/chrome_content_browser_client.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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 1225 matching lines @@
 #else
   return true;
 #endif
 }
 
 bool ChromeContentBrowserClient::MayReuseHost(
     content::RenderProcessHost* process_host) {
   // If there is currently a prerender in progress for the host provided,
   // it may not be shared. We require prerenders to be by themselves in a
   // separate process so that we can monitor their resource usage.
-  Profile* profile = Profile::FromBrowserContext(
-      process_host->GetBrowserContext());
   prerender::PrerenderManager* prerender_manager =
-      prerender::PrerenderManagerFactory::GetForProfile(profile);
+      prerender::PrerenderManagerFactory::GetForBrowserContext(
+          process_host->GetBrowserContext());
   if (prerender_manager &&
       !prerender_manager->MayReuseProcessHost(process_host)) {
     return false;
   }
 
   return true;
 }
 
 bool ChromeContentBrowserClient::ShouldTryToUseExistingProcessHost(
     content::BrowserContext* browser_context, const GURL& url) {
@@ skipping 1876 matching lines @@
 
 void ChromeContentBrowserClient::OverridePageVisibilityState(
       RenderFrameHost* render_frame_host,
       blink::WebPageVisibilityState* visibility_state) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   WebContents* web_contents =
       WebContents::FromRenderFrameHost(render_frame_host);
   DCHECK(web_contents);
 
-  Profile* profile =
-      Profile::FromBrowserContext(web_contents->GetBrowserContext());
   prerender::PrerenderManager* prerender_manager =
-      prerender::PrerenderManagerFactory::GetForProfile(profile);
+      prerender::PrerenderManagerFactory::GetForBrowserContext(
+          web_contents->GetBrowserContext());
   if (prerender_manager &&
       prerender_manager->IsWebContentsPrerendering(web_contents, nullptr)) {
     *visibility_state = blink::WebPageVisibilityStatePrerender;
   }
 }
 
 #if defined(ENABLE_WEBRTC)
 void ChromeContentBrowserClient::MaybeCopyDisableWebRtcEncryptionSwitch(
     base::CommandLine* to_command_line,
     const base::CommandLine& from_command_line,
     version_info::Channel channel) {
 #if defined(OS_ANDROID)
   const version_info::Channel kMaxDisableEncryptionChannel =
       version_info::Channel::BETA;
 #else
   const version_info::Channel kMaxDisableEncryptionChannel =
       version_info::Channel::DEV;
 #endif
   if (channel <= kMaxDisableEncryptionChannel) {
     static const char* const kWebRtcDevSwitchNames[] = {
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)