Add touch events to the protocol, the stub layer, and to the client plugin.

remoting/client/plugin/pepper_input_handler.cc

Index: remoting/client/plugin/pepper_input_handler.cc
diff --git a/remoting/client/plugin/pepper_input_handler.cc b/remoting/client/plugin/pepper_input_handler.cc
index 157efe5eaba5253a699addc563c6799a95ae28d4..75dbebc361e695b89640825c8f68695ef720fbdd 100644
--- a/remoting/client/plugin/pepper_input_handler.cc
+++ b/remoting/client/plugin/pepper_input_handler.cc
@@ -10,6 +10,7 @@
 #include "ppapi/cpp/module_impl.h"
 #include "ppapi/cpp/mouse_cursor.h"
 #include "ppapi/cpp/point.h"
+#include "ppapi/cpp/touch_point.h"
 #include "ppapi/cpp/var.h"
 #include "remoting/proto/event.pb.h"
 #include "ui/events/keycodes/dom4/keycode_converter.h"
@@ -32,6 +33,46 @@ uint32_t MakeLockStates(const pp::InputEvent& event) {
   return lock_states;
 }
 
+// Creates protocol::TouchEvent instance from |pp_touch_event|.
+// Note that only the changed touches are added to the TouchEvent.
+protocol::TouchEvent MakeTouchEvent(const pp::TouchInputEvent& pp_touch_event) {
+  protocol::TouchEvent touch_event;
+  protocol::TouchEvent::TouchEventType type;
+  switch (pp_touch_event.GetType()) {
+    case PP_INPUTEVENT_TYPE_TOUCHSTART:
+      type = protocol::TouchEvent::TOUCH_POINT_START;
+      break;
+    case PP_INPUTEVENT_TYPE_TOUCHMOVE:
+      type = protocol::TouchEvent::TOUCH_POINT_MOVE;
+      break;
+    case PP_INPUTEVENT_TYPE_TOUCHEND:
+      type = protocol::TouchEvent::TOUCH_POINT_END;
+      break;
+    case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
+      type = protocol::TouchEvent::TOUCH_POINT_CANCEL;
+      break;
+    default:
+      NOTREACHED() << "Unknown event type: " << pp_touch_event.GetType();
+      return touch_event;
+  }
+  touch_event.set_event_type(type);
+
+  for (uint32_t i = 0;
+       i < pp_touch_event.GetTouchCount(PP_TOUCHLIST_TYPE_CHANGEDTOUCHES);
+       ++i) {
+    pp::TouchPoint pp_point =
+        pp_touch_event.GetTouchByIndex(PP_TOUCHLIST_TYPE_CHANGEDTOUCHES, i);
+    protocol::TouchEventPoint* point = touch_event.add_touch_points();
+    point->set_id(pp_point.id());
+    point->set_x(pp_point.position().x());
+    point->set_y(pp_point.position().y());
+    point->set_radius_x(pp_point.radii().x());
+    point->set_radius_y(pp_point.radii().y());
+  }
+
+  return touch_event;
+}
+
 // Builds a protocol::KeyEvent from the supplied PPAPI event.
 protocol::KeyEvent MakeKeyEvent(const pp::KeyboardInputEvent& pp_key_event) {
   protocol::KeyEvent key_event;
@@ -72,6 +113,18 @@ PepperInputHandler::PepperInputHandler()
 
 bool PepperInputHandler::HandleInputEvent(const pp::InputEvent& event) {
   switch (event.GetType()) {
+    // Touch input cases.
+    case PP_INPUTEVENT_TYPE_TOUCHSTART:
+    case PP_INPUTEVENT_TYPE_TOUCHMOVE:
+    case PP_INPUTEVENT_TYPE_TOUCHEND:
+    case PP_INPUTEVENT_TYPE_TOUCHCANCEL: {
+      if (!input_stub_)
+        return true;
+      pp::TouchInputEvent pp_touch_event(event);
+      input_stub_->InjectTouchEvent(MakeTouchEvent(pp_touch_event));
+      return true;
+    }
+
     case PP_INPUTEVENT_TYPE_CONTEXTMENU: {
       // We need to return true here or else we'll get a local (plugin) context
       // menu instead of the mouseup event for the right click.