Abstract base 'ExtensionView' to Fix DEPS violation in extension_view_host.h

chrome/browser/ui/views/extensions/extension_popup.h

Index: chrome/browser/ui/views/extensions/extension_popup.h
diff --git a/chrome/browser/ui/views/extensions/extension_popup.h b/chrome/browser/ui/views/extensions/extension_popup.h
index c3c74dd105727a36add002d511197e5b74f9b0c6..29d8901b6f5de19c61c832a87af5fc2e26d1aae0 100644
--- a/chrome/browser/ui/views/extensions/extension_popup.h
+++ b/chrome/browser/ui/views/extensions/extension_popup.h
@@ -15,8 +15,9 @@
 #include "ui/wm/public/activation_change_observer.h"
 #include "url/gurl.h"
 
-
 class Browser;
+class ExtensionViewViews;
+
 namespace views {
 class Widget;
 }
@@ -103,6 +104,7 @@ class ExtensionPopup : public views::BubbleDelegateView,
   void ShowBubble();
 
   void OnDevToolsStateChanged(content::DevToolsAgentHost*, bool attached);
+  ExtensionViewViews* GetExtensionView();
 
   // The contained host for the view.
   scoped_ptr<extensions::ExtensionViewHost> host_;