Get ride of chrome.storage.* data when removing an application.

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index 97af000d53c2ed83d3ba606a587e3a36732afd39..49bcb1f046ae48be4d8c9ff38e76d9b588204198 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -54,6 +54,7 @@ class BrowserEventRouter;
 class ComponentLoader;
 class ContentSettingsStore;
 class CrxInstaller;
+class DataDeleter;
 class ExtensionActionStorageManager;
 class ExtensionRegistry;
 class ExtensionSystem;
@@ -854,6 +855,7 @@ class ExtensionService
                            InstallAppsWithUnlimtedStorage);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsAndCheckStorageProtection);
+  friend class extensions::DataDeleter;
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };