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.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/tab_contents/tab_contents_wrapper.h"
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "chrome/browser/autocomplete_history_manager.h"
 #include "chrome/browser/autofill/autofill_external_delegate.h"
@@ skipping 27 matching lines @@
 #include "chrome/browser/ui/hung_plugin_tab_helper.h"
 #include "chrome/browser/ui/intents/web_intent_picker_controller.h"
 #include "chrome/browser/ui/pdf/pdf_tab_observer.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
 #include "chrome/browser/ui/sad_tab_helper.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 #include "chrome/browser/ui/snapshot_tab_helper.h"
 #include "chrome/browser/ui/sync/one_click_signin_helper.h"
 #include "chrome/browser/ui/sync/tab_contents_wrapper_synced_tab_delegate.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
+#include "chrome/browser/ui/zoom/zoom_tab_helper.h"
 #include "chrome/browser/view_type_utils.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/browser/web_contents.h"
 
 using content::WebContents;
 
 namespace {
 
 static base::LazyInstance<base::PropertyAccessor<TabContentsWrapper*> >
     g_tab_contents_wrapper_property_accessor = LAZY_INSTANCE_INITIALIZER;
@@ skipping 46 matching lines @@
   prefs_tab_helper_.reset(new PrefsTabHelper(contents));
   prerender_tab_helper_.reset(new prerender::PrerenderTabHelper(this));
   restore_tab_helper_.reset(new RestoreTabHelper(contents));
   search_engine_tab_helper_.reset(new SearchEngineTabHelper(contents));
   snapshot_tab_helper_.reset(new SnapshotTabHelper(contents));
   ssl_helper_.reset(new TabContentsSSLHelper(this));
   synced_tab_delegate_.reset(new TabContentsWrapperSyncedTabDelegate(this));
   content_settings_.reset(new TabSpecificContentSettings(contents));
   translate_tab_helper_.reset(new TranslateTabHelper(contents));
   web_intent_picker_controller_.reset(new WebIntentPickerController(this));
+  zoom_tab_helper_.reset(new ZoomTabHelper(this));
 
 #if !defined(OS_ANDROID)
   print_view_manager_.reset(new printing::PrintViewManager(this));
   sad_tab_helper_.reset(new SadTabHelper(contents));
 #endif
 
   // Create the per-tab observers.
   alternate_error_page_tab_observer_.reset(
       new AlternateErrorPageTabObserver(contents, profile()));
   download_request_limiter_observer_.reset(
@@ skipping 82 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsObserver overrides
 
 void TabContentsWrapper::WebContentsDestroyed(WebContents* tab) {
   // Destruction of the WebContents should only be done by us from our
   // destructor. Otherwise it's very likely we (or one of the helpers we own)
   // will attempt to access the WebContents and we'll crash.
   DCHECK(in_destructor_);
 }