exo: Implement v6 of touch protocol including shape and frame event

ui/events/test/event_generator.cc

Index: ui/events/test/event_generator.cc
diff --git a/ui/events/test/event_generator.cc b/ui/events/test/event_generator.cc
index 4a85eaa65e0577e611bcc34e952957eac5e4df10..297d8b0f1c99a7fa3f65916e7590d56378153c22 100644
--- a/ui/events/test/event_generator.cc
+++ b/ui/events/test/event_generator.cc
@@ -274,6 +274,11 @@ void EventGenerator::ExitPenPointerMode() {
   pen_pointer_mode_ = false;
 }
 
+void EventGenerator::SetTouchRadius(float x, float y) {
+  touch_pointer_details_.radius_x = x;
+  touch_pointer_details_.radius_y = y;
+}
+
 void EventGenerator::PressTouch() {
   PressTouchId(0);
 }
@@ -585,6 +590,9 @@ void EventGenerator::Init(gfx::NativeWindow root_window,
   if (window_context)
     current_location_ = delegate()->CenterOfWindow(window_context);
   current_target_ = delegate()->GetTargetAt(current_location_);
+  touch_pointer_details_ =
+      PointerDetails(ui::EventPointerType::POINTER_TYPE_TOUCH, 1.0, 1.0,
+                     std::numeric_limits<float>::quiet_NaN(), 0.0, 0.0);
 }
 
 void EventGenerator::DispatchKeyEvent(bool is_press,
@@ -663,6 +671,11 @@ void EventGenerator::DoDispatchEvent(ui::Event* event, bool async) {
   if (pen_pointer_mode_ && event->IsMouseEvent())
     ConvertToPenPointerEvent(static_cast<ui::MouseEvent*>(event));
 
+  if (event->IsTouchEvent()) {
+    static_cast<ui::TouchEvent*>(event)->set_pointer_details(
+        touch_pointer_details_);
+  }
+
   if (async) {
     std::unique_ptr<ui::Event> pending_event = ui::Event::Clone(*event);
     if (pending_events_.empty()) {