Add UMA to study the effect of defaulting fullscreen video to landscape mode

content/browser/android/content_video_view.h

 // Copyright (c) 2012 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_ANDROID_CONTENT_VIDEO_VIEW_H_
 #define CONTENT_BROWSER_ANDROID_CONTENT_VIDEO_VIEW_H_
 
 #include <jni.h>
 
 #include "base/android/jni_weak_ref.h"
@@ skipping 54 matching lines @@
 
   // Method called by |manager_| to inform the Java class about player status
   // change.
   void UpdateMediaMetadata();
   void OnMediaPlayerError(int errorType);
   void OnVideoSizeChanged(int width, int height);
   void OnBufferingUpdate(int percent);
   void OnPlaybackComplete();
   void OnExitFullscreen();
 
+  // Functions called to record fullscreen playback UMA metrics.
+  void RecordFullscreenPlayback(
+      JNIEnv*, jobject, bool is_portrait_video, bool is_orientation_portrait);
+  void RecordExitFullscreenPlayback(
+      JNIEnv*, jobject, bool is_portrait_video,
+      long playback_duration_in_milliseconds_before_orientation_change,
+      long playback_duration_in_milliseconds_after_orientation_change);
+
   // Return the corresponing ContentVideoView Java object if any.
   base::android::ScopedJavaLocalRef<jobject> GetJavaObject(JNIEnv* env);
 
  private:
   // Creates the corresponding ContentVideoView Java object.
   JavaObjectWeakGlobalRef CreateJavaObject();
 
   // Returns the associated NativeView
   gfx::NativeView GetNativeView();
 
@@ skipping 16 matching lines @@
 
   // Weak pointer for posting tasks.
   base::WeakPtrFactory<ContentVideoView> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentVideoView);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIDEO_VIEW_H_