Zoom Extension API

chrome/browser/extensions/api/tabs/tabs_api.h

Index: chrome/browser/extensions/api/tabs/tabs_api.h
diff --git a/chrome/browser/extensions/api/tabs/tabs_api.h b/chrome/browser/extensions/api/tabs/tabs_api.h
index 481046977f7ca7d439fa670f0141d263be41cf11..a9c5c9c35ec8d096ed5943819cd5665d5cc859d0 100644
--- a/chrome/browser/extensions/api/tabs/tabs_api.h
+++ b/chrome/browser/extensions/api/tabs/tabs_api.h
@@ -42,6 +42,10 @@ class PrefRegistrySyncable;
 
 namespace extensions {
 
+// Converts a ZoomMode to its zoom settings dictionary object representation.
+void ZoomModeToZoomSettings(content::ZoomMode zoom_mode,
+                            base::DictionaryValue* zoom_settings);
+
 // Windows
 class WindowsGetFunction : public ChromeSyncExtensionFunction {
   virtual ~WindowsGetFunction() {}
@@ -256,6 +260,65 @@ class TabsInsertCSSFunction : public ExecuteCodeInTabFunction {
   DECLARE_EXTENSION_FUNCTION("tabs.insertCSS", TABS_INSERTCSS)
 };
 
+class ZoomAPIFunction : public ChromeAsyncExtensionFunction {
+ protected:
+  virtual ~ZoomAPIFunction() {}
+
+  // Gets the WebContents for |tab_id| if it is specified. Otherwise get the
+  // WebContents for the active tab in the current window.
+  bool GetWebContents(int* tab_id, content::WebContents** web_contents);
+};
+
+class TabsSetZoomFunction : public ZoomAPIFunction,
+                            public content::NotificationObserver {
+ public:
+  TabsSetZoomFunction();
+
+ private:
+  virtual ~TabsSetZoomFunction() {}
+
+  virtual bool RunImpl() OVERRIDE;
+
+  // content::NotificationObserver.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  // The unique identifier of this initiated zoom change.
+  int zoom_id_;
+
+  content::NotificationRegistrar registrar_;
+
+  DECLARE_EXTENSION_FUNCTION("tabs.setZoom", TABS_SETZOOM)
+};
+
+class TabsGetZoomFunction : public ZoomAPIFunction {
+ private:
+  virtual ~TabsGetZoomFunction() {}
+
+  virtual bool RunImpl() OVERRIDE;
+
+  DECLARE_EXTENSION_FUNCTION("tabs.getZoom", TABS_GETZOOM)
+};
+
+class TabsSetZoomSettingsFunction : public ZoomAPIFunction {
+ private:
+  virtual ~TabsSetZoomSettingsFunction() {}
+
+  virtual bool RunImpl() OVERRIDE;
+
+  DECLARE_EXTENSION_FUNCTION("tabs.setZoomSettings", TABS_SETZOOMSETTINGS)
+};
+
+class TabsGetZoomSettingsFunction : public ZoomAPIFunction {
+ private:
+  virtual ~TabsGetZoomSettingsFunction() {}
+
+  virtual bool RunImpl() OVERRIDE;
+
+  DECLARE_EXTENSION_FUNCTION("tabs.getZoomSettings", TABS_GETZOOMSETTINGS)
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_API_H_