Switch tabs from VR shell.

chrome/browser/android/vr_shell/vr_shell.cc

 // Copyright 2016 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/vr_shell.h"
 
 #include <android/native_window_jni.h>
 
 #include <string>
 #include <utility>
@@ skipping 389 matching lines @@
     }
     case OMNIBOX_CONTENT:
       html_interface_->HandleOmniboxInput(*arguments);
       break;
     case SET_CONTENT_PAUSED: {
       bool paused;
       CHECK(arguments->GetBoolean("paused", &paused));
       SetContentPaused(paused);
       break;
     }
+    case SHOW_TAB: {
+      int id;
+      CHECK(arguments->GetInteger("id", &id));
+      delegate_provider_->ShowTab(id);
+      break;
+    }
 #if defined(ENABLE_VR_SHELL_UI_DEV)
     case RELOAD_UI:
       ui_contents_->GetController().Reload(content::ReloadType::NORMAL, false);
       html_interface_.reset(new UiInterface(UiInterface::Mode::STANDARD,
                                             main_contents_->IsFullscreen()));
       vr_web_contents_observer_->SetUiInterface(html_interface_.get());
       break;
 #endif
     case ZOOM_OUT:  // Not handled yet.
     case ZOOM_IN:  // Not handled yet.
@@ skipping 185 matching lines @@
   return reinterpret_cast<intptr_t>(new VrShell(
       env, obj, content::WebContents::FromJavaWebContents(content_web_contents),
       reinterpret_cast<ui::WindowAndroid*>(content_window_android),
       content::WebContents::FromJavaWebContents(ui_web_contents),
       reinterpret_cast<ui::WindowAndroid*>(ui_window_android),
       for_web_vr, VrShellDelegate::GetNativeVrShellDelegate(env, delegate),
       reinterpret_cast<gvr_context*>(gvr_api), reprojected_rendering));
 }
 
 }  // namespace vr_shell