Ntp: restore scroll position.

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 fb2af84a19a48700c30c66e841503041620ab8d0..4f732c82ab1fd1f79c4bea7308a9fd7939b819c5 100644
--- a/content/browser/frame_host/navigation_controller_android.h
+++ b/content/browser/frame_host/navigation_controller_android.h
@@ -138,6 +138,11 @@ class CONTENT_EXPORT NavigationControllerAndroid {
                              const base::android::JavaParamRef<jobject>& obj,
                              jlong source_native_navigation_controller_android,
                              jboolean replace_entry);
+  void SetEntryExtraData(JNIEnv* env,
+                         const base::android::JavaParamRef<jobject>& obj,
+                         jint index,
+                         const base::android::JavaParamRef<jstring>& jkey,
+                         const base::android::JavaParamRef<jstring>& jvalue);
 
  private:
   NavigationControllerImpl* navigation_controller_;