Adding new maximize menu according to spec

ui/views/bubble/bubble_delegate.h

Index: ui/views/bubble/bubble_delegate.h
diff --git a/ui/views/bubble/bubble_delegate.h b/ui/views/bubble/bubble_delegate.h
index a76a7274995654efbb39a7d6f378772a665c5069..53828c0ad493e03a66c45d6d589e0eb90785d854 100644
--- a/ui/views/bubble/bubble_delegate.h
+++ b/ui/views/bubble/bubble_delegate.h
@@ -80,6 +80,11 @@ class VIEWS_EXPORT BubbleDelegateView : public WidgetDelegateView,
     use_focusless_ = use_focusless;
   }
 
+  bool try_mirroring_arrow() const { return try_mirroring_arrow_; }
+  void set_try_mirroring_arrow(bool try_mirroring_arrow) {
+    try_mirroring_arrow_ = try_mirroring_arrow;
+  }
+
   // Get the arrow's anchor rect in screen space.
   virtual gfx::Rect GetAnchorRect();
 
@@ -167,6 +172,10 @@ class VIEWS_EXPORT BubbleDelegateView : public WidgetDelegateView,
   // These bubbles are not interactive and should not gain focus.
   bool use_focusless_;
 
+  // If true (defaults to true), the arrow may be mirrored to fit the
+  // bubble on screen better.
+  bool try_mirroring_arrow_;
+
   // Parent native window of the bubble.
   gfx::NativeView parent_window_;