Add setting to isolate zoom changes by default.

chrome/browser/ui/webui/options/browser_options_handler.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_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 239 matching lines @@
   // Callback for the "defaultFontSizeAction" message. This is called if the
   // user changes the default font size. |args| is an array that contains
   // one item, the font size as a numeric value.
   void HandleDefaultFontSize(const base::ListValue* args);
 
   // Callback for the "defaultZoomFactorAction" message. This is called if the
   // user changes the default zoom factor. |args| is an array that contains
   // one item, the zoom factor as a numeric value.
   void HandleDefaultZoomFactor(const base::ListValue* args);
 
+  // Callback for the "defaultZoomScopeAction" message. This is called if the
+  // user toggles the default zoom scope checkbox.
+  // |args| will contain the checkbox checked state as a boolean.
+  void HandleDefaultZoomScope(const base::ListValue* args);
+
   // Callback for the "Use SSL 3.0" checkbox. This is called if the user toggles
   // the "Use SSL 3.0" checkbox.
   void HandleUseSSL3Checkbox(const base::ListValue* args);
 
   // Callback for the "Use TLS 1.0" checkbox. This is called if the user toggles
   // the "Use TLS 1.0" checkbox.
   void HandleUseTLS1Checkbox(const base::ListValue* args);
 
   // Callback for the "restartBrowser" message. Restores all tabs on restart.
   void HandleRestartBrowser(const base::ListValue* args);
@@ skipping 80 matching lines @@
 
   // Update value of predictive network actions UI element.
   void SetupNetworkPredictionControl();
 
   // Setup the font size selector control.
   void SetupFontSizeSelector();
 
   // Setup the page zoom selector control.
   void SetupPageZoomSelector();
 
+  // Setup the default zoom scope checkbox.
+  void SetupZoomScopeCheckbox();
+
   // Setup the visibility of the reset button.
   void SetupAutoOpenFileTypes();
 
   // Setup the proxy settings section UI.
   void SetupProxySettingsSection();
 
   // Setup the UI specific to managing supervised users.
   void SetupManagingSupervisedUsers();
 
   // Setup the UI for Easy Unlock.
@@ skipping 53 matching lines @@
   TemplateURLService* template_url_service_;  // Weak.
 
   scoped_refptr<ui::SelectFileDialog> select_folder_dialog_;
 
   bool cloud_print_mdns_ui_enabled_;
 
   StringPrefMember auto_open_files_;
 
   std::unique_ptr<ChromeZoomLevelPrefs::DefaultZoomLevelSubscription>
       default_zoom_level_subscription_;
+  std::unique_ptr<ChromeZoomLevelPrefs::DefaultZoomScopeSubscription>
+      default_zoom_scope_subscription_;
 
   PrefChangeRegistrar profile_pref_registrar_;
 #if defined(OS_CHROMEOS)
   std::unique_ptr<policy::PolicyChangeRegistrar> policy_registrar_;
 
   // Whether factory reset can be performed.
   bool enable_factory_reset_;
 
   PrefChangeRegistrar local_state_pref_change_registrar_;
 #endif
 
   ScopedObserver<SigninManagerBase, SigninManagerBase::Observer>
       signin_observer_;
 
   // Used to get WeakPtr to self for use on the UI thread.
   base::WeakPtrFactory<BrowserOptionsHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserOptionsHandler);
 };
 
 }  // namespace options
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_