VR: Add initial URL bar element and texture.

chrome/browser/android/vr_shell/textures/url_bar_texture.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_TEXTURES_URL_BAR_TEXTURE_H_
+#define CHROME_BROWSER_ANDROID_VR_SHELL_TEXTURES_URL_BAR_TEXTURE_H_
+
+#include "chrome/browser/android/vr_shell/textures/ui_texture.h"
+
+#include "url/gurl.h"
+
+namespace vr_shell {
+
+class UrlBarTexture : public UiTexture {
+ public:
+  UrlBarTexture();
+  ~UrlBarTexture() override;
+  gfx::Size GetPreferredTextureSize(int width) const override;
+  gfx::SizeF GetDrawnSize() const override;
+
+  void SetHover(bool hover);
+  void SetURL(const GURL& gurl);
+
+ private:
+  void Draw(SkCanvas* canvas, const gfx::Size& texture_size) override;
+  float ToPixels(float meters) const;
+
+  gfx::SizeF size_;
+  bool hover_ = false;
+  GURL gurl_;
+};
+
+}  // namespace vr_shell
+
+#endif  // CHROME_BROWSER_ANDROID_VR_SHELL_TEXTURES_URL_BAR_TEXTURE_H_