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 411 matching lines @@
     case HISTORY_BACK:
       if (main_contents_ && main_contents_->IsFullscreen()) {
         main_contents_->ExitFullscreen(false);
         return;
       }
       // Otherwise handle in java.
       break;
     case ZOOM_OUT:  // Not handled yet.
     case ZOOM_IN:   // Not handled yet.
       return;
+    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));
       SetUiState();
       vr_web_contents_observer_->SetUiInterface(html_interface_.get());
       return;
 #endif
     default:
       break;
@@ skipping 12 matching lines @@
       break;
     case LOAD_URL: {
       base::string16 url_string;
       CHECK(arguments->GetString("url", &url_string));
       base::android::ScopedJavaLocalRef<jstring> string =
           base::android::ConvertUTF16ToJavaString(env, url_string);
       Java_VrShellImpl_loadURL(env, j_vr_shell_.obj(), string,
                                ui::PageTransition::PAGE_TRANSITION_TYPED);
       break;
     }
+    case SHOW_TAB:
+      // Not handled in Java.
+      break;
     default:
       NOTREACHED();
   }
 }
 
 void VrShell::RenderViewHostChanged(content::RenderViewHost* old_host,
                                     content::RenderViewHost* new_host) {
   new_host->GetWidget()->GetView()->SetBackgroundColor(SK_ColorTRANSPARENT);
 }
 
@@ skipping 176 matching lines @@
            jboolean reprojected_rendering) {
   return reinterpret_cast<intptr_t>(new VrShell(
       env, obj, 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