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

chrome/browser/android/vr_shell/vr_shell.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 
 #include <jni.h>
 
 #include <memory>
 
 #include "base/android/jni_weak_ref.h"
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "device/vr/android/gvr/gvr_delegate.h"
 #include "third_party/gvr-android-sdk/src/libraries/headers/vr/gvr/capi/include/gvr.h"
 #include "third_party/gvr-android-sdk/src/libraries/headers/vr/gvr/capi/include/gvr_types.h"
 
 namespace base {
 class ListValue;
 class Thread;
 }
 
+namespace blink {
+class WebInputEvent;
+}
+
 namespace content {
 class WebContents;
 }
 
 namespace ui {
 class WindowAndroid;
 }
 
 namespace vr_shell {
 
@@ skipping 21 matching lines @@
  public:
   VrShell(JNIEnv* env, jobject obj,
           content::WebContents* main_contents,
           ui::WindowAndroid* content_window,
           content::WebContents* ui_contents,
           ui::WindowAndroid* ui_window,
           bool for_web_vr,
           VrShellDelegate* delegate,
           gvr_context* gvr_api,
           bool reprojected_rendering);
-
+  void SwapContents(JNIEnv* env,
+                    const base::android::JavaParamRef<jobject>& obj,
+                    const base::android::JavaParamRef<jobject>& web_contents);
   void LoadUIContent(JNIEnv* env,
                      const base::android::JavaParamRef<jobject>& obj);
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void OnTriggerEvent(JNIEnv* env,
                       const base::android::JavaParamRef<jobject>& obj);
   void OnPause(JNIEnv* env,
                const base::android::JavaParamRef<jobject>& obj);
   void OnResume(JNIEnv* env,
                 const base::android::JavaParamRef<jobject>& obj);
   void SetSurface(JNIEnv* env,
                   const base::android::JavaParamRef<jobject>& obj,
                   const base::android::JavaParamRef<jobject>& surface);
   void SetWebVrMode(JNIEnv* env,
                     const base::android::JavaParamRef<jobject>& obj,
                     bool enabled);
   void OnLoadProgressChanged(JNIEnv* env,
                              const base::android::JavaParamRef<jobject>& obj,
                              double progress);
 
   void ContentWebContentsDestroyed();
   // Called when our WebContents have been hidden. Usually a sign that something
   // like another tab placed in front of it.
   void ContentWasHidden();
+  void ContentWasShown();
 
   // html/js UI hooks.
   static base::WeakPtr<VrShell> GetWeakPtr(
       const content::WebContents* web_contents);
 
   // TODO(mthiesse): Clean up threading around UiInterface.
   UiInterface* GetUiInterface();
   void OnDomContentsLoaded();
 
   // device::GvrDelegate implementation
@@ skipping 27 matching lines @@
   // Perform a UI action triggered by the javascript API.
   void DoUiAction(const UiAction action);
 
   void SetContentCssSize(float width, float height, float dpr);
   void SetUiCssSize(float width, float height, float dpr);
 
   void ContentFrameWasResized(bool width_changed);
 
   void ForceExitVr();
 
+  void ProcessUIGesture(std::unique_ptr<blink::WebInputEvent> event);
+  void ProcessContentGesture(std::unique_ptr<blink::WebInputEvent> event);
+
  private:
   ~VrShell() override;
-  void SetIsInVR(bool is_in_vr);
   void PostToGlThreadWhenReady(const base::Closure& task);
 
   // content::WebContentsObserver implementation. All called on UI thread.
   void RenderViewHostChanged(content::RenderViewHost* old_host,
                              content::RenderViewHost* new_host) override;
   void MainFrameWasResized(bool width_changed) override;
   void WebContentsDestroyed() override;
 
   std::unique_ptr<UiInterface> html_interface_;
 
@@ skipping 18 matching lines @@
   base::WeakPtrFactory<VrShell> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VrShell);
 };
 
 bool RegisterVrShell(JNIEnv* env);
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_