Move ContextMenu show/hide state tracking to WebContents

content/public/browser/web_contents.h

Index: content/public/browser/web_contents.h
diff --git a/content/public/browser/web_contents.h b/content/public/browser/web_contents.h
index ebd18a09057faf726baa082d4d1e9d41860173ee..989cfea30e45ca2215c9b406be735236e418a2f4 100644
--- a/content/public/browser/web_contents.h
+++ b/content/public/browser/web_contents.h
@@ -782,6 +782,12 @@ class WebContents : public PageNavigator,
   // Returns true if the current focused element is editable.
   virtual bool IsFocusedElementEditable() = 0;
 
+  // Returns true if a context menu is showing on the page.
+  virtual bool IsShowingContextMenu() const = 0;
+
+  // Tells the WebContents whether the context menu is showing.
+  virtual void SetShowingContextMenu(bool showing) = 0;
+
 #if defined(OS_ANDROID)
   CONTENT_EXPORT static WebContents* FromJavaWebContents(
       const base::android::JavaRef<jobject>& jweb_contents_android);