Export GetLastCommittedEntryIndex and RemoveEntryAtIndex to Java layer

content/browser/frame_host/navigation_controller_android.h

Index: content/browser/frame_host/navigation_controller_android.h
diff --git a/content/browser/frame_host/navigation_controller_android.h b/content/browser/frame_host/navigation_controller_android.h
index 9b642dcd9a1ac3e6e5d7ac3df8b8318330387bd7..9b9a8c6706244d5a5a3146c199857ce09a09d9af 100644
--- a/content/browser/frame_host/navigation_controller_android.h
+++ b/content/browser/frame_host/navigation_controller_android.h
@@ -77,6 +77,8 @@ class CONTENT_EXPORT NavigationControllerAndroid {
   base::android::ScopedJavaLocalRef<jstring>
       GetOriginalUrlForVisibleNavigationEntry(JNIEnv* env, jobject obj);
   void ClearHistory(JNIEnv* env, jobject obj);
+  int GetLastCommittedEntryIndex(JNIEnv* env, jobject obj);
+  jboolean RemoveEntryAtIndex(JNIEnv* env, jobject obj, jint index);
 
  private:
   NavigationController* navigation_controller_;