Extract content dependency from keyboard code

ui/keyboard/content/keyboard_content_util.h

+// Copyright 2015 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.
+
+#ifndef UI_KEYBOARD_CONTENT_KEYBOARD_COTNENT_UTIL_H_
+#define UI_KEYBOARD_CONTENT_KEYBOARD_COTNENT_UTIL_H_
+
+#include "base/strings/string16.h"
+#include "ui/keyboard/keyboard_export.h"
+
+class GURL;
+
+struct GritResourceMap;
+
+namespace keyboard {
+
+// Sets the override content url.
+// This is used by for input view for extension IMEs.
+KEYBOARD_EXPORT void SetOverrideContentUrl(const GURL& url);
+
+// Gets the override content url.
+KEYBOARD_EXPORT const GURL& GetOverrideContentUrl();
+
+// Get the list of keyboard resources. |size| is populated with the number of
+// resources in the returned array.
+KEYBOARD_EXPORT const GritResourceMap* GetKeyboardExtensionResources(
+    size_t* size);
+
+}  // namespace keyboard
+
+#endif  // UI_KEYBOARD_CONTENT_KEYBOARD_COTNENT_UTIL_H_