Adding DRP specfic UMA for FirstContentfulPaint

content/browser/frame_host/navigation_handle_impl.h

Index: content/browser/frame_host/navigation_handle_impl.h
diff --git a/content/browser/frame_host/navigation_handle_impl.h b/content/browser/frame_host/navigation_handle_impl.h
index ba4190dd0c8206bd0c164e8f500b9123bda32435..10b6daef8fd6634b0748597f504ffb15c29780ce 100644
--- a/content/browser/frame_host/navigation_handle_impl.h
+++ b/content/browser/frame_host/navigation_handle_impl.h
@@ -105,20 +105,22 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
       bool is_post,
       const Referrer& sanitized_referrer,
       bool has_user_gesture,
       ui::PageTransition transition,
       bool is_external_protocol) override;
   NavigationThrottle::ThrottleCheckResult CallWillRedirectRequestForTesting(
       const GURL& new_url,
       bool new_method_is_post,
       const GURL& new_referrer_url,
       bool new_is_external_protocol) override;
+  bool IsUsingLofi() const override;
+  bool UsedDataReductionProxy() const override;
 
   NavigatorDelegate* GetDelegate() const;
 
   // Returns the response headers for the request or nullptr if there are none.
   // This should only be accessed after a redirect was encountered or after the
   // navigation is ready to commit. The headers returned should not be modified,
   // as modifications will not be reflected in the network stack.
   const net::HttpResponseHeaders* GetResponseHeaders();
 
   // Get the unique id from the NavigationEntry associated with this
@@ -249,21 +251,20 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
   bool has_user_gesture_;
   ui::PageTransition transition_;
   bool is_external_protocol_;
   net::Error net_error_code_;
   RenderFrameHostImpl* render_frame_host_;
   bool is_same_page_;
   const bool is_synchronous_;
   const bool is_srcdoc_;
   bool was_redirected_;
   scoped_refptr<net::HttpResponseHeaders> response_headers_;
-
   // The state the navigation is in.
   State state_;
 
   // Whether the navigation is in the middle of a transfer. Set to false when
   // the DidStartProvisionalLoad is received from the new renderer.
   bool is_transferring_;
 
   // The FrameTreeNode this navigation is happening in.
   FrameTreeNode* frame_tree_node_;
 
@@ -280,16 +281,22 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
   const int pending_nav_entry_id_;
 
   // This callback will be run when all throttle checks have been performed.
   ThrottleChecksFinishedCallback complete_callback_;
 
   // PlzNavigate
   // Manages the lifetime of a pre-created ServiceWorkerProviderHost until a
   // corresponding ServiceWorkerNetworkProvider is created in the renderer.
   scoped_ptr<ServiceWorkerNavigationHandle> service_worker_handle_;
 
+  // True if the navigation used LoFi.

[tbansal1, 2016/03/08 22:14:43]

Is is_using_lofi_ true when network was slow and Chromium was in LoFi control
group?

[RyanSturm, 2016/03/10 00:37:58]

Should be. It's determined via ShouldEnableLoFiMode.

+  bool is_using_lofi_;

[tbansal1, 2016/03/08 22:14:43]

Initialize these to false in the constructor?

[RyanSturm, 2016/03/10 00:37:58]

Done.

+
+  // True if the navigation was proxied through the data reduction proxy.
+  bool used_data_reduction_proxy_;
+
   DISALLOW_COPY_AND_ASSIGN(NavigationHandleImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_HANDLE_IMPL_H_