Get web application list using Drive V2 API.

chrome/browser/chromeos/gdata/drive_webapps_registry.h

Index: chrome/browser/chromeos/gdata/drive_webapps_registry.h
diff --git a/chrome/browser/chromeos/gdata/drive_webapps_registry.h b/chrome/browser/chromeos/gdata/drive_webapps_registry.h
index 592ba755d4e52e682815ce1d676e89041a8a0233..255fefb92adc92b83cc7a02e1d026139f5017adc 100644
--- a/chrome/browser/chromeos/gdata/drive_webapps_registry.h
+++ b/chrome/browser/chromeos/gdata/drive_webapps_registry.h
@@ -16,6 +16,8 @@
 
 namespace gdata {
 
+class AppList;
+
 // Data structure that defines WebApp
 struct DriveWebAppInfo {
   DriveWebAppInfo(const std::string& app_id,
@@ -63,7 +65,11 @@ class DriveWebAppsRegistryInterface {
 
   // Updates the list of drive-enabled WebApps with freshly fetched account
   // metadata feed.
-  virtual void UpdateFromFeed(AccountMetadataFeed* metadata) = 0;
+  virtual void UpdateFromFeed(const AccountMetadataFeed& metadata) = 0;
+
+  // Updates the list of drive-enabled WebApps with freshly fetched account
+  // metadata feed.
+  virtual void UpdateFromApplicationList(const AppList& applist) = 0;
 };
 
 // The production implementation of DriveWebAppsRegistryInterface.
@@ -79,7 +85,8 @@ class DriveWebAppsRegistry : public DriveWebAppsRegistryInterface {
                                  ScopedVector<DriveWebAppInfo>* apps) OVERRIDE;
   virtual std::set<std::string> GetExtensionsForWebStoreApp(
       const std::string& web_store_id) OVERRIDE;
-  virtual void UpdateFromFeed(AccountMetadataFeed* metadata) OVERRIDE;
+  virtual void UpdateFromFeed(const AccountMetadataFeed& metadata) OVERRIDE;
+  virtual void UpdateFromApplicationList(const AppList& applist) OVERRIDE;
 
  private:
   // Defines WebApp application details that are associated with a given