[Chromecast] Add method to log Cast Event with value.

BUG=internal b/27553453

Review URL: https://codereview.chromium.org/1773333002

Cr-Commit-Position: refs/heads/master@{#380180}

2 files changed, 29 insertions, 0 deletions

diff --git a/chromecast/base/metrics/cast_metrics_helper.cc b/chromecast/base/metrics/cast_metrics_helper.cc
index 8f12042b..75cfa6d 100644
--- a/chromecast/base/metrics/cast_metrics_helper.cc
+++ b/chromecast/base/metrics/cast_metrics_helper.cc
@@ -4,14 +4,21 @@
 
 #include "chromecast/base/metrics/cast_metrics_helper.h"
 
+#include <string>
+#include <vector>
+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/json/json_string_value_serializer.h"
 #include "base/location.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/user_metrics.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
+#include "base/time/time.h"
+#include "base/values.h"
 #include "chromecast/base/metrics/cast_histograms.h"
 #include "chromecast/base/metrics/grouped_histogram.h"
 
@@ -33,6 +40,14 @@ CastMetricsHelper* g_instance = NULL;
 
 const char kMetricsNameAppInfoDelimiter = '#';
 
+scoped_ptr<std::string> SerializeToJson(const base::Value& value) {
+  scoped_ptr<std::string> json_str(new std::string());
+  JSONStringValueSerializer serializer(json_str.get());
+  if (!serializer.Serialize(value))
+    json_str.reset(nullptr);
+  return json_str;
+}
+
 }  // namespace
 
 // static
@@ -276,5 +291,16 @@ void CastMetricsHelper::LogMediumTimeHistogramEvent(
                         50);
 }
 
+void CastMetricsHelper::RecordSimpleActionWithValue(const std::string& event,
+                                                    int value) {
+  scoped_ptr<base::DictionaryValue> cast_event(new base::DictionaryValue());
+  cast_event->SetString("name", event);
+  base::TimeTicks now = base::TimeTicks::Now();
+  cast_event->SetDouble("time", now.ToInternalValue());
+  cast_event->SetInteger("value", value);
+  const std::string message = *SerializeToJson(*cast_event.get()).get();
+  RecordSimpleAction(message);
+}
+
 }  // namespace metrics
 }  // namespace chromecast
diff --git a/chromecast/base/metrics/cast_metrics_helper.h b/chromecast/base/metrics/cast_metrics_helper.h
index 251261d..e8af9cf 100644
--- a/chromecast/base/metrics/cast_metrics_helper.h
+++ b/chromecast/base/metrics/cast_metrics_helper.h
@@ -77,6 +77,9 @@ class CastMetricsHelper {
   // This is used as an in-place replacement of content::RecordComputedAction().
   virtual void RecordSimpleAction(const std::string& action);
 
+  // Logs an event with an integer value
+  virtual void RecordSimpleActionWithValue(const std::string& event, int value);
+
   // Logs UMA record of the time the app made its first paint.
   virtual void LogTimeToFirstPaint();