wip: Second crack at implementing the touch exploration mode.

ui/events/event_dispatcher.cc

Index: ui/events/event_dispatcher.cc
diff --git a/ui/events/event_dispatcher.cc b/ui/events/event_dispatcher.cc
index ca24cde3ff0766948b42099393b89e7473a4905a..16830832aa8ca30872dcccc9dda7dceb90c38ecd 100644
--- a/ui/events/event_dispatcher.cc
+++ b/ui/events/event_dispatcher.cc
@@ -45,12 +45,18 @@ Event* EventDispatcherDelegate::current_event() {
 
 EventDispatchDetails EventDispatcherDelegate::DispatchEvent(EventTarget* target,
                                                             Event* event) {
+  LOG(ERROR) << "EventDispatcherDelegate::DispatchEvent 1"
+      << ", handled=" << event->handled();
   CHECK(target);
   Event::DispatcherApi dispatch_helper(event);
   dispatch_helper.set_phase(EP_PREDISPATCH);
   dispatch_helper.set_result(ER_UNHANDLED);
 
   EventDispatchDetails details = PreDispatchEvent(target, event);
+  LOG(ERROR) << "EventDispatcherDelegate::DispatchEvent: 2"
+      << ", handled=" << event->handled()
+      << ", details.dispatcher_destroyed=" << details.dispatcher_destroyed
+      << ", details.target_destroyed=" << details.target_destroyed;
   if (!event->handled() &&
       !details.dispatcher_destroyed &&
       !details.target_destroyed) {
@@ -79,6 +85,7 @@ EventDispatchDetails EventDispatcherDelegate::PostDispatchEvent(
 EventDispatchDetails EventDispatcherDelegate::DispatchEventToTarget(
     EventTarget* target,
     Event* event) {
+  LOG(ERROR) << "EventDispatcherDelegate::DispatchEventToTarget";
   EventDispatcher* old_dispatcher = dispatcher_;
   EventDispatcher dispatcher(this);
   dispatcher_ = &dispatcher;
@@ -113,6 +120,7 @@ void EventDispatcher::OnHandlerDestroyed(EventHandler* handler) {
 }
 
 void EventDispatcher::ProcessEvent(EventTarget* target, Event* event) {
+  LOG(ERROR) << "EventDispatcherDelegate::ProcessEvent";
   if (!target || !target->CanAcceptEvent(*event))
     return;