Record user action of screen orientation change

content/browser/android/content_view_core_impl.cc

 // Copyright 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.
 
 #include "content/browser/android/content_view_core_impl.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/metrics/user_metrics.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/output/begin_frame_args.h"
 #include "content/browser/accessibility/browser_accessibility_manager_android.h"
 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
 #include "content/browser/android/gesture_event_type.h"
 #include "content/browser/android/interstitial_page_delegate_android.h"
 #include "content/browser/android/java/gin_java_bridge_dispatcher_host.h"
@@ skipping 854 matching lines @@
     GetRenderWidgetHostViewAndroid()->Focus();
   else
     GetRenderWidgetHostViewAndroid()->Blur();
 }
 
 void ContentViewCoreImpl::SendOrientationChangeEvent(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj,
     jint orientation) {
   if (device_orientation_ != orientation) {
+    base::RecordAction(base::UserMetricsAction("OrientationChange"));

[mlamouri (slow - plz ping), 2016/12/06 13:51:22]

nit: I would call this "ScreenOrientationChange" to avoid confusion :)

[Zhiqiang Zhang (Slow), 2016/12/06 17:58:44]

Done.

     device_orientation_ = orientation;
     SendOrientationChangeEventInternal();
   }
 }
 
 jboolean ContentViewCoreImpl::OnTouchEvent(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj,
     const JavaParamRef<jobject>& motion_event,
     jlong time_ms,
@@ skipping 714 matching lines @@
     return ScopedJavaLocalRef<jobject>();
 
   return view->GetJavaObject();
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content