WebView context menu cleanup.

extensions/browser/guest_view/web_view/web_view_guest.h

Index: extensions/browser/guest_view/web_view/web_view_guest.h
diff --git a/extensions/browser/guest_view/web_view/web_view_guest.h b/extensions/browser/guest_view/web_view/web_view_guest.h
index e566fb4710d0f8f0e23b7a3bfa0ec186c8c9cf90..890d17ca079d3eb9dbe117a0888d534513a2d7fd 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.h
+++ b/extensions/browser/guest_view/web_view/web_view_guest.h
@@ -70,6 +70,18 @@ class WebViewGuest : public guest_view::GuestView<WebViewGuest>,
       int embedder_process_id,
       int web_view_instance_id);
 
+  // Retrieve and return the extension ID for the WebView identified by
+  // |embedder_process_id| and |view_instance_id|. If no extension ID can be
+  // found for that GuestView, an empty string will be returned.
+  static std::string GetExtensionID(int embedder_process_id,
+                                    int view_instance_id);
+
+  // Associate the extension ID |extension_id| with the WebView identified by
+  // |embedder_process_id| and |view_instance_id|.
+  static void RegisterExtensionID(const std::string& extension_id,
+                                  int embedder_process_id,
+                                  int view_instance_id);
+
   // Get the current zoom.
   double GetZoom() const;