VR: Add initial URL bar element and texture.

chrome/browser/android/vr_shell/ui_elements/url_bar.h

+// Copyright 2017 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 CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_URL_BAR_H_
+#define CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_URL_BAR_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "chrome/browser/android/vr_shell/ui_elements/textured_element.h"
+#include "url/gurl.h"
+
+namespace vr_shell {
+
+class UrlBarTexture;
+
+class UrlBar : public TexturedElement {
+ public:
+  explicit UrlBar(int preferred_width);
+  ~UrlBar() override;
+
+  void OnHoverEnter() override;
+  void OnHoverLeave() override;
+  void SetURL(const GURL& gurl);
+
+ private:
+  UiTexture* GetTexture() const override;
+  std::unique_ptr<UrlBarTexture> texture_;
+
+  DISALLOW_COPY_AND_ASSIGN(UrlBar);
+};
+
+}  // namespace vr_shell
+
+#endif  // CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_URL_BAR_H_