GTK: Add TRACE_EVENTs around gtk ui events.

base/message_pump_gtk.cc

Index: base/message_pump_gtk.cc
diff --git a/base/message_pump_gtk.cc b/base/message_pump_gtk.cc
index e1cb7f65c4af05e9d3d09ac5db3a144df0c26a07..4f4f9816926aba321b59f22ad1f07929a5bca494 100644
--- a/base/message_pump_gtk.cc
+++ b/base/message_pump_gtk.cc
@@ -7,6 +7,58 @@
 #include <gtk/gtk.h>
 #include <gdk/gdkx.h>
 
+#include "base/profiler/scoped_profile.h"
+#include "base/debug/trace_event.h"
+
+namespace {
+
+const char* EventToTypeString(const GdkEvent* event) {
+  switch (event->type) {
+    case GDK_NOTHING:           return "GDK_NOTHING";
+    case GDK_DELETE:            return "GDK_DELETE";
+    case GDK_DESTROY:           return "GDK_DESTROY";
+    case GDK_EXPOSE:            return "GDK_EXPOSE";
+    case GDK_MOTION_NOTIFY:     return "GDK_MOTION_NOTIFY";
+    case GDK_BUTTON_PRESS:      return "GDK_BUTTON_PRESS";
+    case GDK_2BUTTON_PRESS:     return "GDK_2BUTTON_PRESS";
+    case GDK_3BUTTON_PRESS:     return "GDK_3BUTTON_PRESS";
+    case GDK_BUTTON_RELEASE:    return "GDK_BUTTON_RELEASE";
+    case GDK_KEY_PRESS:         return "GDK_KEY_PRESS";
+    case GDK_KEY_RELEASE:       return "GDK_KEY_RELEASE";
+    case GDK_ENTER_NOTIFY:      return "GDK_ENTER_NOTIFY";
+    case GDK_LEAVE_NOTIFY:      return "GDK_LEAVE_NOTIFY";
+    case GDK_FOCUS_CHANGE:      return "GDK_FOCUS_CHANGE";
+    case GDK_CONFIGURE:         return "GDK_CONFIGURE";
+    case GDK_MAP:               return "GDK_MAP";
+    case GDK_UNMAP:             return "GDK_UNMAP";
+    case GDK_PROPERTY_NOTIFY:   return "GDK_PROPERTY_NOTIFY";
+    case GDK_SELECTION_CLEAR:   return "GDK_SELECTION_CLEAR";
+    case GDK_SELECTION_REQUEST: return "GDK_SELECTION_REQUEST";
+    case GDK_SELECTION_NOTIFY:  return "GDK_SELECTION_NOTIFY";
+    case GDK_PROXIMITY_IN:      return "GDK_PROXIMITY_IN";
+    case GDK_PROXIMITY_OUT:     return "GDK_PROXIMITY_OUT";
+    case GDK_DRAG_ENTER:        return "GDK_DRAG_ENTER";
+    case GDK_DRAG_LEAVE:        return "GDK_DRAG_LEAVE";
+    case GDK_DRAG_MOTION:       return "GDK_DRAG_MOTION";
+    case GDK_DRAG_STATUS:       return "GDK_DRAG_STATUS";
+    case GDK_DROP_START:        return "GDK_DROP_START";
+    case GDK_DROP_FINISHED:     return "GDK_DROP_FINISHED";
+    case GDK_CLIENT_EVENT:      return "GDK_CLIENT_EVENT";
+    case GDK_VISIBILITY_NOTIFY: return "GDK_VISIBILITY_NOTIFY";
+    case GDK_NO_EXPOSE:         return "GDK_NO_EXPOSE";
+    case GDK_SCROLL:            return "GDK_SCROLL";
+    case GDK_WINDOW_STATE:      return "GDK_WINDOW_STATE";
+    case GDK_SETTING:           return "GDK_SETTING";
+    case GDK_OWNER_CHANGE:      return "GDK_OWNER_CHANGE";
+    case GDK_GRAB_BROKEN:       return "GDK_GRAB_BROKEN";
+    case GDK_DAMAGE:            return "GDK_DAMAGE";
+    default:
+      return "Unknown Gdk Event";
+  }
+}
+
+}
+
 namespace base {
 
 MessagePumpGtk::MessagePumpGtk() : MessagePumpGlib() {
@@ -19,6 +71,9 @@ MessagePumpGtk::~MessagePumpGtk() {
 }
 
 void MessagePumpGtk::DispatchEvents(GdkEvent* event) {
+  UNSHIPPED_TRACE_EVENT1("task", "MessagePumpGtk::DispatchEvents",
+                         "type", EventToTypeString(event));
+
   WillProcessEvent(event);
 
   MessagePumpDispatcher* dispatcher = GetDispatcher();