Allow custom context menus to be requested.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index bf3aba06a16238e78b2501113b74821a3dd60190..1e5ca8705bd2daa512e38cfd1840be391b391da6 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -720,8 +720,9 @@ class RenderViewImpl : public RenderWidget,
   virtual int GetEnabledBindings() const OVERRIDE;
   virtual bool GetContentStateImmediately() const OVERRIDE;
   virtual float GetFilteredTimePerFrame() const OVERRIDE;
-  virtual void ShowContextMenu(WebKit::WebFrame* frame,
-                               const WebKit::WebContextMenuData& data) OVERRIDE;
+  virtual int ShowContextMenu(
+      content::ContextMenuClient* client,
+      const content::ContextMenuParams& params) OVERRIDE;
   virtual WebKit::WebPageVisibilityState GetVisibilityState() const OVERRIDE;
   virtual void RunModalAlertDialog(WebKit::WebFrame* frame,
                                    const WebKit::WebString& message) OVERRIDE;
@@ -1340,6 +1341,20 @@ class RenderViewImpl : public RenderWidget,
   size_t selection_text_offset_;
   ui::Range selection_range_;
 
+  // External context menu requests we're waiting for. "Internal"
+  // (WebKit-originated) context menu events will have an ID of 0 and will not
+  // be in this map.
+  //
+  // We don't want to add internal ones since some of the "special" page
+  // handlers in the browser process just ignore the context menu requests so
+  // avoid showing context menus, and so this will cause right clicks to leak
+  // entries in this map. Most users of the custom context menu (e.g. Pepper
+  // plugins) are normally only on "regular" pages and the regular pages will
+  // always respond properly to the request, so we don't have to worry so
+  // much about leaks.
+  IDMap<content::ContextMenuClient, IDMapExternalPointer>
+      pending_context_menus_;
+
   // View ----------------------------------------------------------------------
 
   // Cache the preferred size of the page in order to prevent sending the IPC