Track pending WebContents and widgets by (process_id, routing_id) pair.

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index 984f854b6a71ebf21a7ed44b1fdcc52e0b6cb3f2..a4f8f46b60a4bd1ec8d60c0d40491f0b5b2c63d2 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -198,18 +198,20 @@ class CONTENT_EXPORT RenderViewHostDelegate {
   //
   // Note: this is not called "ShowWindow" because that will clash with
   // the Windows function which is actually a #define.
-  virtual void ShowCreatedWindow(int route_id,
+  virtual void ShowCreatedWindow(int process_id,
+                                 int route_id,
                                  WindowOpenDisposition disposition,
                                  const gfx::Rect& initial_rect,
                                  bool user_gesture) {}
 
   // Show the newly created widget with the specified bounds.
   // The widget is identified by the route_id passed to CreateNewWidget.
-  virtual void ShowCreatedWidget(int route_id,
+  virtual void ShowCreatedWidget(int process_id,
+                                 int route_id,
                                  const gfx::Rect& initial_rect) {}
 
   // Show the newly created full screen widget. Similar to above.
-  virtual void ShowCreatedFullscreenWidget(int route_id) {}
+  virtual void ShowCreatedFullscreenWidget(int process_id, int route_id) {}
 
   // Returns the SessionStorageNamespace the render view should use. Might
   // create the SessionStorageNamespace on the fly.