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

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index 2ef62bec3df0142e13e38f818bb89893184867ed..66c0a9f3deb1ed421b96c6667452ce8116f047a2 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -1578,11 +1578,35 @@ void ContentViewCoreImpl::ExtractSmartClipData(JNIEnv* env,
       GetWebContents()->GetRoutingID(), rect));
 }
 
+void ContentViewCoreImpl::ResumeResponseDeferredAtStart(JNIEnv* env,
+                                                        jobject obj) {
+  static_cast<WebContentsImpl*>(GetWebContents())->
+      ResumeResponseDeferredAtStart();
+}
+
 jint ContentViewCoreImpl::GetCurrentRenderProcessId(JNIEnv* env, jobject obj) {
   return GetRenderProcessIdFromRenderViewHost(
       web_contents_->GetRenderViewHost());
 }
 
+void ContentViewCoreImpl::DidDeferAfterResponseStarted() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj(java_ref_.get(env));
+  if (obj.is_null())
+    return;
+  Java_ContentViewCore_didDeferAfterResponseStarted(env, obj.obj());
+}
+
+bool ContentViewCoreImpl::WillHandleDeferAfterResponseStarted() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null())
+    return false;
+
+  return Java_ContentViewCore_willHandleDeferAfterResponseStarted(env,
+                                                                  obj.obj());
+}
+
 void ContentViewCoreImpl::OnSmartClipDataExtracted(
     const base::string16& result) {
   JNIEnv* env = AttachCurrentThread();