VR: Add initial URL bar element and texture.

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

+// 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.
+
+#include "chrome/browser/android/vr_shell/ui_elements/url_bar.h"
+
+#include "base/memory/ptr_util.h"
+#include "chrome/browser/android/vr_shell/textures/url_bar_texture.h"
+
+namespace vr_shell {
+
+UrlBar::UrlBar(int preferred_width)
+    : TexturedElement(preferred_width),
+      texture_(base::MakeUnique<UrlBarTexture>()) {}
+
+UrlBar::~UrlBar() = default;
+
+void UrlBar::OnHoverEnter() {
+  texture_->SetHover(true);
+  Update();
+}
+
+void UrlBar::OnHoverLeave() {
+  texture_->SetHover(false);
+  Update();
+}
+
+UiTexture* UrlBar::GetTexture() const {
+  return texture_.get();
+}
+
+void UrlBar::SetURL(const GURL& gurl) {
+  texture_->SetURL(gurl);
+}
+
+}  // namespace vr_shell