PlzNavigate: support NavigationThrottle::WillProcessResponse

content/browser/frame_host/navigation_request.h

Index: content/browser/frame_host/navigation_request.h
diff --git a/content/browser/frame_host/navigation_request.h b/content/browser/frame_host/navigation_request.h
index b5c43ad56563ca136b86bfd6f7dd29e116af6bc4..c7e19ee6f9165615a9e148c3ab8c8e1a7daddba8 100644
--- a/content/browser/frame_host/navigation_request.h
+++ b/content/browser/frame_host/navigation_request.h
@@ -164,6 +164,12 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
   // NavigationHandle.
   void OnStartChecksComplete(NavigationThrottle::ThrottleCheckResult result);
   void OnRedirectChecksComplete(NavigationThrottle::ThrottleCheckResult result);
+  void OnWillProcessResponseChecksComplete(
+      NavigationThrottle::ThrottleCheckResult result);
+
+  // Have a RenderFrameHost commit the navigation. The NavigationRequest will
+  // be destroyed after this call.
+  void CommitNavigation();
 
   // Called when the navigation is about to be sent to the IO thread.
   void InitializeServiceWorkerHandleIfNeeded();
@@ -204,6 +210,11 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
 
   scoped_ptr<NavigationHandleImpl> navigation_handle_;
 
+  // Holds the ResourceResponse and the StreamHandle for the navigation while
+  // the WillProcessResponse checks are performed by the NavigationHandle.
+  scoped_refptr<ResourceResponse> response_;
+  scoped_ptr<StreamHandle> body_;
+
   DISALLOW_COPY_AND_ASSIGN(NavigationRequest);
 };