Make WebContentsObserver::web_contents() public

chrome/browser/ui/search/instant_page.cc

 // Copyright 2013 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/search/instant_page.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/ui/search/search_model.h"
 #include "chrome/browser/ui/search/search_tab_helper.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/frame_navigate_params.h"
 
 InstantPage::Delegate::~Delegate() {
 }
 
 InstantPage::~InstantPage() {
-  if (contents())
-    SearchTabHelper::FromWebContents(contents())->model()->RemoveObserver(this);
+  if (web_contents()) {
+    SearchTabHelper::FromWebContents(web_contents())->model()->RemoveObserver(
+        this);
+  }
 }
 
 bool InstantPage::supports_instant() const {
-  return contents() ?
-      SearchTabHelper::FromWebContents(contents())->SupportsInstant() : false;
+  return web_contents() &&
+      SearchTabHelper::FromWebContents(web_contents())->SupportsInstant();
 }
 
 const std::string& InstantPage::instant_url() const {
   return instant_url_;
 }
 
 bool InstantPage::IsLocal() const {
-  return contents() &&
-      contents()->GetURL() == GURL(chrome::kChromeSearchLocalNtpUrl);
+  return web_contents() &&
+      web_contents()->GetURL() == GURL(chrome::kChromeSearchLocalNtpUrl);
 }
 
 InstantPage::InstantPage(Delegate* delegate, const std::string& instant_url,
                          Profile* profile, bool is_incognito)
     : profile_(profile),
       delegate_(delegate),
       instant_url_(instant_url),
       is_incognito_(is_incognito) {
 }
 
-void InstantPage::SetContents(content::WebContents* web_contents) {
+void InstantPage::SetContents(content::WebContents* new_web_contents) {
   ClearContents();
 
-  if (!web_contents)
+  if (!new_web_contents)
     return;
 
-  Observe(web_contents);
-  SearchModel* model = SearchTabHelper::FromWebContents(contents())->model();
+  Observe(new_web_contents);
+  SearchModel* model =
+      SearchTabHelper::FromWebContents(web_contents())->model();
   model->AddObserver(this);
 
   // Already know whether the page supports instant.
   if (model->instant_support() != INSTANT_SUPPORT_UNKNOWN)
     InstantSupportDetermined(model->instant_support() == INSTANT_SUPPORT_YES);
 }
 
 bool InstantPage::ShouldProcessAboutToNavigateMainFrame() {
   return false;
 }
 
 void InstantPage::DidCommitProvisionalLoadForFrame(
     content::RenderFrameHost* render_frame_host,
     const GURL& url,
     content::PageTransition /* transition_type */) {
   if (!render_frame_host->GetParent() &&
       ShouldProcessAboutToNavigateMainFrame())
-    delegate_->InstantPageAboutToNavigateMainFrame(contents(), url);
+    delegate_->InstantPageAboutToNavigateMainFrame(web_contents(), url);
 }
 
 void InstantPage::ModelChanged(const SearchModel::State& old_state,
                                const SearchModel::State& new_state) {
   if (old_state.instant_support != new_state.instant_support)
     InstantSupportDetermined(new_state.instant_support == INSTANT_SUPPORT_YES);
 }
 
 void InstantPage::InstantSupportDetermined(bool supports_instant) {
-  delegate_->InstantSupportDetermined(contents(), supports_instant);
+  delegate_->InstantSupportDetermined(web_contents(), supports_instant);
 
   // If the page doesn't support Instant, stop listening to it.
   if (!supports_instant)
     ClearContents();
 }
 
 void InstantPage::ClearContents() {
-  if (contents())
-    SearchTabHelper::FromWebContents(contents())->model()->RemoveObserver(this);
+  if (web_contents()) {
+    SearchTabHelper::FromWebContents(web_contents())->model()->RemoveObserver(
+        this);
+  }
 
   Observe(NULL);
 }