Provide a WebContents API to discover the playback of a fullscreen video.

content/browser/web_contents/web_contents_android.h

 // Copyright 2013 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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_
 
 #include <jni.h>
 
 #include <memory>
@@ skipping 178 matching lines @@
                     const base::android::JavaParamRef<jstring>& url,
                     jboolean is_fav_icon,
                     jint max_bitmap_size,
                     jboolean bypass_cache,
                     const base::android::JavaParamRef<jobject>& jcallback);
   void DismissTextHandles(JNIEnv* env,
                           const base::android::JavaParamRef<jobject>& obj);
   void SetHasPersistentVideo(JNIEnv* env,
                              const base::android::JavaParamRef<jobject>& obj,
                              jboolean value);
+  bool HasActiveEffectivelyFullscreenVideo(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& obj);
 
   void SetMediaSession(
       const base::android::ScopedJavaLocalRef<jobject>& j_media_session);
 
  private:
   RenderWidgetHostViewAndroid* GetRenderWidgetHostViewAndroid();
 
   void OnFinishGetContentBitmap(const base::android::JavaRef<jobject>& obj,
                                 const base::android::JavaRef<jobject>& callback,
                                 const SkBitmap& bitmap,
@@ skipping 12 matching lines @@
   base::android::ScopedJavaGlobalRef<jobject> obj_;
 
   base::WeakPtrFactory<WebContentsAndroid> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_