Remove app/win/win_util.h,cc etc.

views/widget/widget_win.cc

Index: views/widget/widget_win.cc
diff --git a/views/widget/widget_win.cc b/views/widget/widget_win.cc
index 1fd9dbdbac0dc65cc28093bff4d77f52f9345968..5f14cc9a93501cce41360d96c84a5e451b5bd36b 100644
--- a/views/widget/widget_win.cc
+++ b/views/widget/widget_win.cc
@@ -4,7 +4,6 @@
 
 #include "views/widget/widget_win.h"
 
-#include "app/win/win_util.h"
 #include "base/string_util.h"
 #include "gfx/canvas_skia.h"
 #include "gfx/native_theme_win.h"
@@ -30,6 +29,17 @@
 
 using ui::ViewProp;
 
+namespace {
+
+// Returns whether the specified window is the current active window.
+bool IsWindowActive(HWND hwnd) {
+  WINDOWINFO info;
+  return ::GetWindowInfo(hwnd, &info) &&
+         ((info.dwWindowStatus & WS_ACTIVECAPTION) != 0);
+}
+
+}  // namespace
+
 namespace views {
 
 // Property used to link the HWND to its RootView.
@@ -393,7 +403,7 @@ bool WidgetWin::IsVisible() const {
 }
 
 bool WidgetWin::IsActive() const {
-  return app::win::IsWindowActive(hwnd());
+  return IsWindowActive(hwnd());
 }
 
 bool WidgetWin::IsAccessibleWidget() const {