Tracks changes to zoom icon and zoom percentage. Notifies browser window if the icon should be chan…

chrome/browser/ui/tab_contents/tab_contents_wrapper.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_WRAPPER_H_
 #define CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_WRAPPER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 28 matching lines @@
 class Profile;
 class RestoreTabHelper;
 class SadTabHelper;
 class SearchEngineTabHelper;
 class SnapshotTabHelper;
 class TabContentsSSLHelper;
 class TabSpecificContentSettings;
 class ThumbnailGenerator;
 class TranslateTabHelper;
 class WebIntentPickerController;
+class ZoomTabHelper;
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
 class OneClickSigninHelper;
 #endif
 
 namespace browser_sync {
 class SyncedTabDelegate;
 }
 
 namespace extensions {
@@ skipping 140 matching lines @@
   }
 
   TranslateTabHelper* translate_tab_helper() {
     return translate_tab_helper_.get();
   }
 
   WebIntentPickerController* web_intent_picker_controller() {
     return web_intent_picker_controller_.get();
   }
 
+  ZoomTabHelper* zoom_tab_helper() {
+    return zoom_tab_helper_.get();
+  }
+
   // Overrides -----------------------------------------------------------------
 
   // content::WebContentsObserver overrides:
   virtual void WebContentsDestroyed(content::WebContents* tab) OVERRIDE;
 
  private:
   // Used to retrieve this object from |web_contents_|, which is placed in
   // its property bag to avoid adding additional interfaces.
   static base::PropertyAccessor<TabContentsWrapper*>* property_accessor();
 
@@ skipping 37 matching lines @@
   // The TabSpecificContentSettings object is used to query the blocked content
   // state by various UI elements.
   scoped_ptr<TabSpecificContentSettings> content_settings_;
 
   scoped_ptr<ThumbnailGenerator> thumbnail_generator_;
   scoped_ptr<TranslateTabHelper> translate_tab_helper_;
 
   // Handles displaying a web intents picker to the user.
   scoped_ptr<WebIntentPickerController> web_intent_picker_controller_;
 
+  scoped_ptr<ZoomTabHelper> zoom_tab_helper_;
+
   // Per-tab observers ---------------------------------------------------------
   // (These provide no API for callers; objects that need to exist 1:1 with tabs
   // and silently do their thing live here.)
 
   scoped_ptr<AlternateErrorPageTabObserver> alternate_error_page_tab_observer_;
   scoped_ptr<DownloadRequestLimiterObserver> download_request_limiter_observer_;
   scoped_ptr<extensions::WebNavigationTabObserver> webnavigation_observer_;
   scoped_ptr<ExternalProtocolObserver> external_protocol_observer_;
   scoped_ptr<OmniboxSearchHint> omnibox_search_hint_;
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
@@ skipping 12 matching lines @@
 
   // The supporting objects need to outlive the WebContents dtor (as they may
   // be called upon during its execution). As a result, this must come last
   // in the list.
   scoped_ptr<content::WebContents> web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsWrapper);
 };
 
 #endif  // CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_WRAPPER_H_