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 2f7603a8af6e1eb2eecaf9c0348dcb7c7705ba9f..a7731e589f276d0b0306fd2c81ae93a3dccc07f0 100644
--- a/views/widget/widget_win.cc
+++ b/views/widget/widget_win.cc
@@ -6,7 +6,6 @@
 
 #include <dwmapi.h>
 
-#include "app/win/win_util.h"
 #include "base/string_util.h"
 #include "base/win/windows_version.h"
 #include "gfx/canvas_skia.h"
@@ -35,6 +34,17 @@
 
 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.
@@ -407,7 +417,7 @@ bool WidgetWin::IsVisible() const {
 }
 
 bool WidgetWin::IsActive() const {
-  return app::win::IsWindowActive(hwnd());
+  return IsWindowActive(hwnd());
 }
 
 bool WidgetWin::IsAccessibleWidget() const {