Switch to using the new Link Doctor API.

chrome/browser/ui/link_doctor_tab_observer.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/ui/alternate_error_tab_observer.h"
+#include "chrome/browser/ui/link_doctor_tab_observer.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
 #include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
+#include "google_apis/google_api_keys.h"
 
 using content::RenderFrameHost;
 using content::RenderViewHost;
 using content::WebContents;
 
-DEFINE_WEB_CONTENTS_USER_DATA_KEY(AlternateErrorPageTabObserver);
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(LinkDoctorTabObserver);
 
-AlternateErrorPageTabObserver::AlternateErrorPageTabObserver(
-    WebContents* web_contents)
+LinkDoctorTabObserver::LinkDoctorTabObserver(WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())) {
   PrefService* prefs = profile_->GetPrefs();
   if (prefs) {
     pref_change_registrar_.Init(prefs);
     pref_change_registrar_.Add(
         prefs::kAlternateErrorPagesEnabled,
-        base::Bind(&AlternateErrorPageTabObserver::
-                       OnAlternateErrorPagesEnabledChanged,
+        base::Bind(&LinkDoctorTabObserver::OnLinkDoctorEnabledChanged,
                    base::Unretained(this)));
   }
 
   registrar_.Add(this, chrome::NOTIFICATION_GOOGLE_URL_UPDATED,
                  content::Source<Profile>(profile_->GetOriginalProfile()));
 }
 
-AlternateErrorPageTabObserver::~AlternateErrorPageTabObserver() {
+LinkDoctorTabObserver::~LinkDoctorTabObserver() {
 }
 
 // static
-void AlternateErrorPageTabObserver::RegisterProfilePrefs(
+void LinkDoctorTabObserver::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* prefs) {
   prefs->RegisterBooleanPref(prefs::kAlternateErrorPagesEnabled,
                              true,
                              user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsObserver overrides
 
-void AlternateErrorPageTabObserver::RenderViewCreated(
+void LinkDoctorTabObserver::RenderViewCreated(
     RenderViewHost* render_view_host) {
-  UpdateAlternateErrorPageURL(render_view_host);
+  UpdateLinkDoctorInfo(render_view_host);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // content::NotificationObserver overrides
 
-void AlternateErrorPageTabObserver::Observe(
+void LinkDoctorTabObserver::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(chrome::NOTIFICATION_GOOGLE_URL_UPDATED, type);
-  UpdateAlternateErrorPageURL(web_contents()->GetRenderViewHost());
+  UpdateLinkDoctorInfo(web_contents()->GetRenderViewHost());
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Internal helpers
 
-GURL AlternateErrorPageTabObserver::GetAlternateErrorPageURL() const {
+GURL LinkDoctorTabObserver::GetLinkDoctorURL() const {
   GURL url;

[Peter Kasting, 2014/02/10 23:19:46]

Nit: Remove this temp; return GURL() or google_util::LinkDoctorBaseURL()
directly below.

[mmenke, 2014/02/11 16:02:19]

Done.

-  // Disable alternate error pages when in Incognito mode.
+  // Disable aLink Doctor suggestions when in Incognito mode.

[Peter Kasting, 2014/02/10 23:19:46]

Nit: aLink -> Link

[mmenke, 2014/02/11 16:02:19]

Done.

   if (profile_->IsOffTheRecord())

[Peter Kasting, 2014/02/10 23:19:46]

Nit: I'd combine this statement (and its comment) with the next one.

[mmenke, 2014/02/11 16:02:19]

Done.

     return url;
 
-  if (profile_->GetPrefs()->GetBoolean(prefs::kAlternateErrorPagesEnabled)) {
-    url = google_util::LinkDoctorBaseURL();
-    if (!url.is_valid())
-      return url;
-    url = google_util::AppendGoogleLocaleParam(url);
-    url = google_util::AppendGoogleTLDParam(profile_, url);
-  }
+  // Don't use Link Doctor suggestions when disabled.
+  if (!profile_->GetPrefs()->GetBoolean(prefs::kAlternateErrorPagesEnabled))
+    return url;
+
+  url = google_util::LinkDoctorBaseURL();
   return url;
 }
 
-void AlternateErrorPageTabObserver::OnAlternateErrorPagesEnabledChanged() {
-  UpdateAlternateErrorPageURL(web_contents()->GetRenderViewHost());
+void LinkDoctorTabObserver::OnLinkDoctorEnabledChanged() {
+  UpdateLinkDoctorInfo(web_contents()->GetRenderViewHost());
 }
 
-void AlternateErrorPageTabObserver::UpdateAlternateErrorPageURL(
+void LinkDoctorTabObserver::UpdateLinkDoctorInfo(
     RenderViewHost* rvh) {
   RenderFrameHost* rfh = rvh->GetMainFrame();
-  rfh->Send(new ChromeViewMsg_SetAltErrorPageURL(
-                rfh->GetRoutingID(), GetAlternateErrorPageURL()));
+  rfh->Send(new ChromeViewMsg_SetLinkDoctorInfo(
+                rfh->GetRoutingID(),

[Peter Kasting, 2014/02/10 23:19:46]

Nit: Indent 4, not 14

You may list more than one arg per line if you wish.

[mmenke, 2014/02/11 16:02:19]

Done.

+                GetLinkDoctorURL(),
+                google_util::GetGoogleLocale(),
+                google_util::GetGoogleCountryCode(profile_),
+                google_apis::GetAPIKey(),
+                google_util::GetGoogleSearchURL(profile_)));
 }