Send event as a string if it has no dict

The play / pause events were missing, because they have no key/value pairs

Change-Id: I7944aafa504070ef75a99fad0ec7ee299dc6ff73
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1808314Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Ted Meyer <tmathmeyer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#697443}

content/renderer/media/inspector_media_event_handler.cc

@@ -54,6 +54,14 @@ void InspectorMediaEventHandler::SendQueuedMediaEvents(
           event.type == media::MediaLogEvent::MEDIA_DEBUG_LOG_ENTRY) {
         event_type = blink::InspectorPlayerEvent::MESSAGE_EVENT;
       }
+      if (event.params.size() == 0) {
+        blink::InspectorPlayerEvent ev = {
+            blink::InspectorPlayerEvent::PLAYBACK_EVENT, event.time,
+            blink::WebString::FromUTF8("Event"),
+            blink::WebString::FromUTF8(
+                media::MediaLog::EventTypeToString(event.type))};
+        events.emplace_back(ev);
+      }
       for (auto&& itr : event.params.DictItems()) {
         blink::InspectorPlayerEvent ev = {event_type, event.time,
                                           blink::WebString::FromUTF8(itr.first),

content/renderer/media/inspector_media_event_handler_unittest.cc

@@ -203,4 +203,26 @@ TEST_F(InspectorMediaEventHandlerTest, ConvertsEventsAndProperties) {
   handler_->SendQueuedMediaEvents(events);
 }
 
+TEST_F(InspectorMediaEventHandlerTest, PassesPlayAndPauseEvents) {
+  std::vector<media::MediaLogEvent> events = {
+      CreateEvent(media::MediaLogEvent::PLAY),
+      CreateEvent(media::MediaLogEvent::PAUSE)};
+
+  blink::InspectorPlayerEvents expected_events;
+  blink::InspectorPlayerEvent play = {
+      blink::InspectorPlayerEvent::PLAYBACK_EVENT, base::TimeTicks(),
+      blink::WebString::FromUTF8("Event"), blink::WebString::FromUTF8("PLAY")};
+  blink::InspectorPlayerEvent pause = {
+      blink::InspectorPlayerEvent::PLAYBACK_EVENT, base::TimeTicks(),
+      blink::WebString::FromUTF8("Event"), blink::WebString::FromUTF8("PAUSE")};
+  expected_events.emplace_back(play);
+  expected_events.emplace_back(pause);
+
+  EXPECT_CALL(*mock_context_,
+              MockNotifyPlayerEvents(EventsEqualTo(expected_events)))
+      .Times(1);
+
+  handler_->SendQueuedMediaEvents(events);
+}
+
 }  // namespace content