[Sync] SyncEngine 1.5: Fix all backend references in PSS.

chrome/browser/sync/profile_sync_service_android.h

Index: chrome/browser/sync/profile_sync_service_android.h
diff --git a/chrome/browser/sync/profile_sync_service_android.h b/chrome/browser/sync/profile_sync_service_android.h
index 068a5b8b28daff237c1c58b5f4b68892918f0754..332ebc2fac5a8fb79c555913cdf8b3b450a6e7c5 100644
--- a/chrome/browser/sync/profile_sync_service_android.h
+++ b/chrome/browser/sync/profile_sync_service_android.h
@@ -59,9 +59,8 @@ class ProfileSyncServiceAndroid : public syncer::SyncServiceObserver {
                    const base::android::JavaParamRef<jobject>& obj);
   jboolean IsSyncActive(JNIEnv* env,
                         const base::android::JavaParamRef<jobject>& obj);
-  jboolean IsBackendInitialized(
-      JNIEnv* env,
-      const base::android::JavaParamRef<jobject>& obj);
+  jboolean IsEngineInitialized(JNIEnv* env,
+                               const base::android::JavaParamRef<jobject>& obj);
   void SetSetupInProgress(JNIEnv* env,
                           const base::android::JavaParamRef<jobject>& obj,
                           jboolean in_progress);