[Chromecast] Add input support.

chromecast/browser/cast_window_manager.cc

Index: chromecast/browser/cast_window_manager.cc
diff --git a/chromecast/browser/cast_window_manager.cc b/chromecast/browser/cast_window_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..bb79d0f65ad85024b51b38b27e16ec9516d18bdf
--- /dev/null
+++ b/chromecast/browser/cast_window_manager.cc
@@ -0,0 +1,20 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chromecast/browser/cast_window_manager.h"
+
+namespace chromecast {
+namespace shell {
+
+CastWindowManager::CastWindowManager() { }
+
+CastWindowManager::~CastWindowManager() { }
+
+void CastWindowManager::StartWindowManager() { }
+
+void CastWindowManager::AddWebContents(content::WebContents* web_contents,
+                                       bool is_overlay, bool is_transparent) { }
+
+}  // namespace shell
+}  // namespace chromecast