Add desktop vs. ash context to ui_controls

chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc

Index: chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
diff --git a/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc b/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
index 44b9f3e303e9f6bbca39056deba60187638f564e..fe89e8a700a6cf587993ec537ec5eb5654d2f5d7 100644
--- a/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
+++ b/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
@@ -14,6 +14,8 @@
 #include "ui/aura/env.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/screen_type_delegate.h"
+#include "ui/ui_controls/ui_controls.h"
+#include "ui/ui_controls/ui_controls_type_delegate.h"
 #include "ui/views/widget/desktop_aura/desktop_screen.h"
 #include "ui/views/widget/desktop_aura/desktop_stacking_client.h"
 
@@ -35,6 +37,21 @@ class ScreenTypeDelegateWin : public gfx::ScreenTypeDelegate {
  private:
   DISALLOW_COPY_AND_ASSIGN(ScreenTypeDelegateWin);
 };
+
+class UIControlsTypeDelegateWin : public ui_controls::UIControlsTypeDelegate {
+ public:
+  UIControlsTypeDelegateWin() {}
+  virtual ~UIControlsTypeDelegateWin() {}
+  virtual ui_controls::UIControlsType GetUIControlsTypeForNativeView(
+      gfx::NativeView view) OVERRIDE {
+    return chrome::IsNativeViewInAsh(view) ?
+        ui_controls::UI_CONTROLS_TYPE_ALTERNATE :
+        ui_controls::UI_CONTROLS_TYPE_NATIVE;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(UIControlsTypeDelegateWin);
+};
 #endif
 
 ChromeBrowserMainExtraPartsAsh::ChromeBrowserMainExtraPartsAsh() {
@@ -53,6 +70,8 @@ void ChromeBrowserMainExtraPartsAsh::PreProfileInit() {
   } else {
 #if !defined(OS_CHROMEOS)
     gfx::Screen::SetScreenTypeDelegate(new ScreenTypeDelegateWin);
+    ui_controls::UIControls::SetUIControlsTypeDelegate(
+        new UIControlsTypeDelegateWin);
 #endif
   }