Add CanMinimize to classes that implement WidgetDelegate::CanMaximize.

content/shell/browser/shell_views.cc

Index: content/shell/browser/shell_views.cc
diff --git a/content/shell/browser/shell_views.cc b/content/shell/browser/shell_views.cc
index e7e8c9ccc94d57c8e9158416cce8b90ed060a2c1..64fa68283cd764c73573f86cb11b3f68ed7fcfc7 100644
--- a/content/shell/browser/shell_views.cc
+++ b/content/shell/browser/shell_views.cc
@@ -342,6 +342,7 @@ class ShellWindowDelegateView : public views::WidgetDelegateView,
   // Overridden from WidgetDelegateView
   virtual bool CanResize() const OVERRIDE { return true; }
   virtual bool CanMaximize() const OVERRIDE { return true; }
+  virtual bool CanMinimize() const OVERRIDE { return true; }
   virtual base::string16 GetWindowTitle() const OVERRIDE {
     return title_;
   }