Refactor VR Shell Input. Locks input to click/scroll targets.

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;
 
 UiTexture* UrlBar::GetTexture() const {
   return texture_.get();
 }
 
-void UrlBar::OnHoverEnter() {
-  texture_->SetHover(true);
+void UrlBar::OnHoverEnter(gfx::PointF position) {
+  if (!texture_->SetDrawFlags(UrlBarTexture::FLAG_HOVER))
+    return;
   Update();
 }
 
 void UrlBar::OnHoverLeave() {
-  texture_->SetHover(false);
+  if (!texture_->SetDrawFlags(0))
+    return;
   Update();
 }
 
-void UrlBar::OnButtonUp() {
+void UrlBar::OnButtonUp(gfx::PointF position) {
   back_button_callback_.Run();
 }
 
 void UrlBar::SetEnabled(bool enabled) {
   if (enabled && !enabled_) {
     Update();
   }
   enabled_ = enabled;
 }
 
@@ skipping 11 matching lines @@
   texture_->SetSecurityLevel(level);
   if (enabled_)
     Update();
 }
 
 void UrlBar::SetBackButtonCallback(const base::Callback<void()>& callback) {
   back_button_callback_ = callback;
 }
 
 }  // namespace vr_shell