views: implement width snapping for DialogDelegateViews

ui/views/bubble/info_bubble.h

Index: ui/views/bubble/info_bubble.h
diff --git a/ui/views/bubble/info_bubble.h b/ui/views/bubble/info_bubble.h
index 2b24b77d7aca3df5cfc7bfd825e2b8b80ceed55b..defd030ad4f9b11b4fc64aef2fc8baffaf484b43 100644
--- a/ui/views/bubble/info_bubble.h
+++ b/ui/views/bubble/info_bubble.h
@@ -28,12 +28,14 @@ class InfoBubble : public BubbleDialogDelegateView {
 
   // BubbleDialogDelegateView:
   NonClientFrameView* CreateNonClientFrameView(Widget* widget) override;
-  gfx::Size GetPreferredSize() const override;
   void OnWidgetDestroyed(Widget* widget) override;
   void OnWidgetBoundsChanged(Widget* widget,
                              const gfx::Rect& new_bounds) override;
   int GetDialogButtons() const override;
 
+  // DialogDelegateView:
+  gfx::Size GetUnsnappedPreferredSize() const override;

[Peter Kasting, 2017/03/30 00:35:36]

Nit: Leave in above list

+
   View* anchor() { return anchor_; }
   const View* anchor() const { return anchor_; }