Move the keyboard files from base/ to app/.

base/win_util.cc

Index: base/win_util.cc
diff --git a/base/win_util.cc b/base/win_util.cc
index 66dbbe01bcd01d26a28cd669fbbc56678b0c8683..c54bb05626751638c5766a7422a9523f1857e0b5 100644
--- a/base/win_util.cc
+++ b/base/win_util.cc
@@ -383,12 +383,12 @@ std::wstring FormatLastWin32Error() {
   return FormatMessage(GetLastError());
 }
 
-WORD KeyboardCodeToWin(base::KeyboardCode keycode) {
+WORD KeyboardCodeToWin(app::KeyboardCode keycode) {
   return static_cast<WORD>(keycode);
 }
 
-base::KeyboardCode WinToKeyboardCode(WORD keycode) {
-  return static_cast<base::KeyboardCode>(keycode);
+app::KeyboardCode WinToKeyboardCode(WORD keycode) {
+  return static_cast<app::KeyboardCode>(keycode);
 }
 
 bool SetAppIdForPropertyStore(IPropertyStore* property_store,