Move the keyboard files from base/ to app/.

app/keyboard_code_conversion_mac.mm

Index: app/keyboard_code_conversion_mac.mm
diff --git a/base/keyboard_code_conversion_mac.mm b/app/keyboard_code_conversion_mac.mm
similarity index 99%
rename from base/keyboard_code_conversion_mac.mm
rename to app/keyboard_code_conversion_mac.mm
index 79c1b1930c8de5f875cb18e95d9b07bfeade9e16..d4df0bdb14c2d20ec05b518ae59bba2ff75513ea 100644
--- a/base/keyboard_code_conversion_mac.mm
+++ b/app/keyboard_code_conversion_mac.mm
@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#import "base/keyboard_code_conversion_mac.h"
+#import "app/keyboard_code_conversion_mac.h"
 
 #include <algorithm>
 #import <Carbon/Carbon.h>
 
-#include "base/logging.h"
+#include "app/logging.h"
 
-namespace base {
+namespace app {
 
 namespace {
 
@@ -290,4 +290,4 @@ int MacKeyCodeForWindowsKeyCode(KeyboardCode keycode,
   return macKeycode;
 }
 
-}  // namespace base
+}  // namespace app