Navigation transitions: Block first response until after transitions have run.

content/browser/android/content_view_core_impl.h

Index: content/browser/android/content_view_core_impl.h
diff --git a/content/browser/android/content_view_core_impl.h b/content/browser/android/content_view_core_impl.h
index 8ebd453002a0571207f6edb87e0190209d9bf650..ea311ffff99c1c7412488b1f590d213b0baaf3b6 100644
--- a/content/browser/android/content_view_core_impl.h
+++ b/content/browser/android/content_view_core_impl.h
@@ -218,6 +218,16 @@ class ContentViewCoreImpl : public ContentViewCore,
                             jint width,
                             jint height);
 
+  // Notifies the TransitionRequestManager that the main frame navigation is
+  // a transition navigation.
+  void SetHasPendingTransitionRequest(JNIEnv* env,
+                                      jobject obj,
+                                      jboolean has_pending_transition);
+
+  // Notifies the main frame that it can continue navigation (if it was deferred
+  // immediately at first response).
+  void ResumeResponseDeferredAtStart(JNIEnv* env, jobject obj);
+
   jint GetCurrentRenderProcessId(JNIEnv* env, jobject obj);
 
   // --------------------------------------------------------------------------