OOPIF: report both original and destination rfh in AboutToNavigateRenderFrame.

content/browser/devtools/render_view_devtools_agent_host.h

Index: content/browser/devtools/render_view_devtools_agent_host.h
diff --git a/content/browser/devtools/render_view_devtools_agent_host.h b/content/browser/devtools/render_view_devtools_agent_host.h
index 9b8b605288ea357b1dc220960dfb4838e097301f..b7e5976625ebc3bf38554e40f3f7a62e1ed39260 100644
--- a/content/browser/devtools/render_view_devtools_agent_host.h
+++ b/content/browser/devtools/render_view_devtools_agent_host.h
@@ -52,6 +52,8 @@ class CONTENT_EXPORT RenderViewDevToolsAgentHost
   void SynchronousSwapCompositorFrame(
       const cc::CompositorFrameMetadata& frame_metadata);
 
+  bool HasRenderFrameHost(RenderFrameHost* host);
+
   // DevTooolsAgentHost overrides.
   void DisconnectWebContents() override;
   void ConnectWebContents(WebContents* web_contents) override;
@@ -75,7 +77,8 @@ class CONTENT_EXPORT RenderViewDevToolsAgentHost
   void OnClientDetached() override;
 
   // WebContentsObserver overrides.
-  void AboutToNavigateRenderFrame(RenderFrameHost* render_frame_host) override;
+  void AboutToNavigateRenderFrame(RenderFrameHost* old_host,
+                                  RenderFrameHost* new_host) override;
   void RenderFrameHostChanged(RenderFrameHost* old_host,
                               RenderFrameHost* new_host) override;
   void RenderFrameDeleted(RenderFrameHost* rvh) override;