Adding new extension sync integration tests. Also modified the way that profile

chrome/test/live_sync/live_apps_sync_test.h

Index: chrome/test/live_sync/live_apps_sync_test.h
diff --git a/chrome/test/live_sync/live_apps_sync_test.h b/chrome/test/live_sync/live_apps_sync_test.h
index 78dda33bd43a7bdbcbc1cfabc264907ce1d1efe0..d4424936e4610e223ed48b1745d4584604b7ddb6 100644
--- a/chrome/test/live_sync/live_apps_sync_test.h
+++ b/chrome/test/live_sync/live_apps_sync_test.h
@@ -41,6 +41,18 @@ class LiveAppsSyncTest : public LiveSyncTest {
   // Installs all pending synced apps for |profile|.
   void InstallAppsPendingForSync(Profile* profile);
 
+  // Enables the app for the given index on |profile|.
+  void EnableApp(Profile* profile, int index);
+
+  // Disables the appfor the given index on |profile|.
+  void DisableApp(Profile* profile, int index);
+
+  // Enables the app for the given index in incognito mode on |profile|.
+  void IncognitoEnableApp(Profile* profile, int index);
+
+  // Disables the app for the given index in incognito mode on |profile|.
+  void IncognitoDisableApp(Profile* profile, int index);
+
  private:
   LiveSyncExtensionHelper extension_helper_;