Swap to foreground tab when following links that open in a new tab/window in VR Shell.

chrome/browser/android/vr_shell/vr_input_manager.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_input_manager.h"
 
 #include "base/task_runner_util.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/render_widget_host_view.h"
@@ skipping 12 matching lines @@
                                  float y) {
   WebGestureEvent result(type, WebInputEvent::NoModifiers, time);
   result.x = x;
   result.y = y;
   result.sourceDevice = blink::WebGestureDeviceTouchpad;
   return result;
 }
 }  // namespace
 
 VrInputManager::VrInputManager(content::WebContents* web_contents)
-    : web_contents_(web_contents),
-      weak_ptr_factory_(this) {
+    : web_contents_(web_contents) {
 }
 
 VrInputManager::~VrInputManager() = default;
 
-base::WeakPtr<VrInputManager> VrInputManager::GetWeakPtr() {
-  return weak_ptr_factory_.GetWeakPtr();
-}
-
 void VrInputManager::ProcessUpdatedGesture(
     std::unique_ptr<blink::WebInputEvent> event) {
   if (WebInputEvent::isMouseEventType(event->type())) {
     ForwardMouseEvent(static_cast<const blink::WebMouseEvent&>(*event));
   } else {
     SendGesture(static_cast<const blink::WebGestureEvent&>(*event));
   }
 }
 
 void VrInputManager::SendGesture(const WebGestureEvent& gesture) {
@@ skipping 25 matching lines @@
     const blink::WebMouseEvent& mouse_event) {
   if (!web_contents_->GetRenderWidgetHostView())
       return;
   content::RenderWidgetHost* rwh =
       web_contents_->GetRenderWidgetHostView()->GetRenderWidgetHost();
   if (rwh)
     rwh->ForwardMouseEvent(mouse_event);
 }
 
 }  // namespace vr_shell