Add UninstallApp() method to DriveAPIService interface.

chrome/browser/drive/gdata_wapi_service.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/drive/gdata_wapi_service.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 566 matching lines @@
   DCHECK(!callback.is_null());
 
   return sender_->StartRequestWithRetry(
       new AuthorizeAppRequest(sender_.get(),
                               url_generator_,
                               callback,
                               resource_id,
                               app_id));
 }
 
+CancelCallback GDataWapiService::UninstallApp(
+    const std::string& app_id,
+    const EntryActionCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  // GData WAPI doesn't support app uninstallation.
+  // This method should never be called if GData WAPI is enabled.
+  NOTREACHED();
+  return CancelCallback();
+}
+
 CancelCallback GDataWapiService::GetResourceListInDirectoryByWapi(
     const std::string& directory_resource_id,
     const google_apis::GetResourceListCallback& callback) {
   return GetResourceListInDirectory(directory_resource_id, callback);
 }
 
 CancelCallback GDataWapiService::GetRemainingResourceList(
     const GURL& next_link,
     const google_apis::GetResourceListCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 50 matching lines @@
   if (CanSendRequest()) {
     FOR_EACH_OBSERVER(
         DriveServiceObserver, observers_, OnReadyToSendRequests());
   } else if (!HasRefreshToken()) {
     FOR_EACH_OBSERVER(
         DriveServiceObserver, observers_, OnRefreshTokenInvalid());
   }
 }
 
 }  // namespace drive