Convert ValidationMessageBubbleView to BubbleDialogDelegate

chrome/browser/ui/validation_message_bubble.h

Index: chrome/browser/ui/validation_message_bubble.h
diff --git a/chrome/browser/ui/validation_message_bubble.h b/chrome/browser/ui/validation_message_bubble.h
index 8307107b8e0503316432a8988956e6db3e2dfdd3..d4e73780ca6c027774e685c0ee6f1b1b00b75bb1 100644
--- a/chrome/browser/ui/validation_message_bubble.h
+++ b/chrome/browser/ui/validation_message_bubble.h
@@ -21,21 +21,24 @@ class ValidationMessageBubble {
  public:
   // Open a tooltip-like window to show the specified messages.  The window
   // should not change focus state.
-  static std::unique_ptr<ValidationMessageBubble> CreateAndShow(
+  static base::WeakPtr<ValidationMessageBubble> CreateAndShow(
       content::RenderWidgetHost* widget_host,
       const gfx::Rect& anchor_in_root_view,
       const base::string16& main_text,
       const base::string16& sub_text);
 
-  // Close the window and destruct the object.
-  virtual ~ValidationMessageBubble() {}
-
   // Move the window to a position such that the bubble arrow points to the
   // specified anchor.  |anchor_in_root_view| is in DIP unit, and relative to
   // RWHV for |widget_host|.
   virtual void SetPositionRelativeToAnchor(
       content::RenderWidgetHost* widget_host,
       const gfx::Rect& anchor_in_root_view) = 0;
+
+  // Called to close the bubble. This should lead to destruction of |this|.
+  virtual void CloseValidationMessage() = 0;
+
+ protected:
+  virtual ~ValidationMessageBubble() {}
 };
 
 #endif  // CHROME_BROWSER_UI_VALIDATION_MESSAGE_BUBBLE_H_