Refactor content client to include a single Request/CancelPermission method.

android_webview/browser/aw_content_browser_client.h

Index: android_webview/browser/aw_content_browser_client.h
diff --git a/android_webview/browser/aw_content_browser_client.h b/android_webview/browser/aw_content_browser_client.h
index a193d50dfde9006734f0944fdd56ed44b2da78e2..c457a36cae10cb2b48d294cedd938736cc44fd5b 100644
--- a/android_webview/browser/aw_content_browser_client.h
+++ b/android_webview/browser/aw_content_browser_client.h
@@ -119,28 +119,18 @@ class AwContentBrowserClient : public content::ContentBrowserClient {
       content::RenderFrameHost* render_frame_host,
       scoped_ptr<content::DesktopNotificationDelegate> delegate,
       base::Closure* cancel_callback) OVERRIDE;
-  virtual void RequestGeolocationPermission(
+  virtual void RequestPermission(
+      content::PermissionType permission,
       content::WebContents* web_contents,
       int bridge_id,
       const GURL& requesting_frame,
       bool user_gesture,
       const base::Callback<void(bool)>& result_callback) OVERRIDE;
-  virtual void CancelGeolocationPermissionRequest(
+  virtual void CancelPermissionRequest(
+      content::PermissionType permission,
       content::WebContents* web_contents,
       int bridge_id,
-      const GURL& requesting_frame) OVERRIDE;
-  virtual void RequestMidiSysExPermission(
-      content::WebContents* web_contents,
-      int bridge_id,
-      const GURL& requesting_frame,
-      bool user_gesture,
-      base::Callback<void(bool)> result_callback,
-      base::Closure* cancel_callback) OVERRIDE;
-  virtual void RequestProtectedMediaIdentifierPermission(
-    content::WebContents* web_contents,
-    const GURL& origin,
-    base::Callback<void(bool)> result_callback,
-    base::Closure* cancel_callback) OVERRIDE;
+      const GURL& origin) OVERRIDE;
   virtual bool CanCreateWindow(const GURL& opener_url,
                                const GURL& opener_top_level_frame_url,
                                const GURL& source_origin,