Move app.window API implementation to extensions

extensions/renderer/app_window_custom_bindings.h

Index: extensions/renderer/app_window_custom_bindings.h
diff --git a/chrome/renderer/extensions/app_window_custom_bindings.h b/extensions/renderer/app_window_custom_bindings.h
similarity index 81%
rename from chrome/renderer/extensions/app_window_custom_bindings.h
rename to extensions/renderer/app_window_custom_bindings.h
index e0f942a250669420ba252acd21b8279f999e4133..04f7194aa75e0224f875271007d157d19dee7b70 100644
--- a/chrome/renderer/extensions/app_window_custom_bindings.h
+++ b/extensions/renderer/app_window_custom_bindings.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_RENDERER_EXTENSIONS_APP_WINDOW_CUSTOM_BINDINGS_H_
-#define CHROME_RENDERER_EXTENSIONS_APP_WINDOW_CUSTOM_BINDINGS_H_
+#ifndef EXTENSIONS_RENDERER_APP_WINDOW_CUSTOM_BINDINGS_H_
+#define EXTENSIONS_RENDERER_APP_WINDOW_CUSTOM_BINDINGS_H_
 
 #include "extensions/renderer/object_backed_native_handler.h"
 
@@ -31,4 +31,4 @@ class AppWindowCustomBindings : public ObjectBackedNativeHandler {
 
 }  // namespace extensions
 
-#endif  // CHROME_RENDERER_EXTENSIONS_APP_WINDOW_CUSTOM_BINDINGS_H_
+#endif  // EXTENSIONS_RENDERER_APP_WINDOW_CUSTOM_BINDINGS_H_