Add a FrameHostMsg_BeginNavigation IPC

content/browser/frame_host/render_frame_host_manager.h

Index: content/browser/frame_host/render_frame_host_manager.h
diff --git a/content/browser/frame_host/render_frame_host_manager.h b/content/browser/frame_host/render_frame_host_manager.h
index b7039f5cbe7b8a6959f6c2d93bb69a65f7f27c21..f7440592f3f086b5ef906a327d1d150ba368c917 100644
--- a/content/browser/frame_host/render_frame_host_manager.h
+++ b/content/browser/frame_host/render_frame_host_manager.h
@@ -17,6 +17,7 @@
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/common/referrer.h"
 
+struct FrameHostMsg_BeginNavigation_Params;
 
 namespace content {
 class BrowserContext;
@@ -27,6 +28,7 @@ class FrameTreeNode;
 class NavigationControllerImpl;
 class NavigationEntry;
 class NavigationEntryImpl;
+class NavigationRequest;
 class RenderFrameHost;
 class RenderFrameHostDelegate;
 class RenderFrameHostImpl;
@@ -175,6 +177,11 @@ class CONTENT_EXPORT RenderFrameHostManager : public NotificationObserver {
                                    pending_and_current_web_ui_.get();
   }
 
+  // Returns the current navigation request (used in the PlzNavigate navigation

[nasko, 2014/07/07 11:35:09]

Now that you mention it like this, it might not be too bad of a token to use and
grep for at the end of the project, so we can clean up comments ; ).

+  // logic refactoring project).
+  NavigationRequest* navigation_request() const {

[nasko, 2014/07/07 11:35:09]

This is only used for tests, so it should be named with _for_testing suffix and
possibly made private.

[clamy, 2014/07/07 13:36:23]

Done.

+    return navigation_request_.get(); }
+
   // Sets the pending Web UI for the pending navigation, ensuring that the
   // bindings are appropriate for the given NavigationEntry.
   void SetPendingWebUI(const NavigationEntryImpl& entry);
@@ -300,6 +307,9 @@ class CONTENT_EXPORT RenderFrameHostManager : public NotificationObserver {
   // of WebContentsImpl.
   void ResetProxyHosts();
 
+  // Used to start a navigation, part of PlzNavigate project.
+  void BeginNavigation(const FrameHostMsg_BeginNavigation_Params& params);
+
  private:
   friend class RenderFrameHostManagerTest;
   friend class TestWebContents;
@@ -494,6 +504,9 @@ class CONTENT_EXPORT RenderFrameHostManager : public NotificationObserver {
 
   NotificationRegistrar registrar_;
 
+  // Owns a navigation request that originated in that frame until it commits.
+  scoped_ptr<NavigationRequest> navigation_request_;
+
   base::WeakPtrFactory<RenderFrameHostManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostManager);