set latency_info source_event_type on fake KeyUp

latency_info.source_event_type for fake KeyUp event
should be OTHER instead of KEYPRESS.

Bug: 772505
Change-Id: Ie43e31426e345f427f0eeb9863fbd0449c1c67dc
Reviewed-on: https://chromium-review.googlesource.com/727370Reviewed-by: Timothy Dresser <tdresser@chromium.org>
Commit-Queue: Ella Ge <eirage@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510072}

content/browser/renderer_host/render_widget_host_view_mac.mm

@@ -2325,12 +2325,15 @@ void RenderWidgetHostViewMac::OnDisplayMetricsChanged(
     NativeWebKeyboardEvent fakeEvent = event;
     fakeEvent.SetType(blink::WebInputEvent::kKeyUp);
     fakeEvent.skip_in_browser = true;
-    widgetHost->ForwardKeyboardEventWithLatencyInfo(fakeEvent, latency_info);
+    ui::LatencyInfo fake_event_latency_info = latency_info;
+    fake_event_latency_info.set_source_event_type(ui::SourceEventType::OTHER);
+    widgetHost->ForwardKeyboardEventWithLatencyInfo(fakeEvent,
+                                                    fake_event_latency_info);
     // Not checking |renderWidgetHostView_->render_widget_host_| here because
     // a key event with |skip_in_browser| == true won't be handled by browser,
     // thus it won't destroy the widget.
 
-    widgetHost->ForwardKeyboardEventWithCommands(event, latency_info,
+    widgetHost->ForwardKeyboardEventWithCommands(event, fake_event_latency_info,
                                                  &editCommands_);
 
     // Calling ForwardKeyboardEventWithCommands() could have destroyed the