Record user action of screen orientation change

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index 93e95b3df5aeba29952e178285429f7779b183de..06e8438d13a59ca84f113e1a75685648d89c6841 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -14,6 +14,7 @@
 #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"
@@ -888,6 +889,7 @@ void ContentViewCoreImpl::SendOrientationChangeEvent(
     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();
   }