Add GetMinimumSize() for Borders, and make LabelButton auto-size to at least as

chrome/browser/ui/views/frame/app_non_client_frame_view_ash.cc

Index: chrome/browser/ui/views/frame/app_non_client_frame_view_ash.cc
===================================================================
--- chrome/browser/ui/views/frame/app_non_client_frame_view_ash.cc	(revision 236640)
+++ chrome/browser/ui/views/frame/app_non_client_frame_view_ash.cc	(working copy)
@@ -52,6 +52,10 @@
     return gfx::Insets(0, kShadowSizeX, kShadowSizeBottom, 0);
   }
 
+  virtual gfx::Size GetMinimumSize() const OVERRIDE {
+    return border_.size();
+  }
+
   gfx::ImageSkia border_;
 
   DISALLOW_COPY_AND_ASSIGN(ControlViewBorder);