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

remoting/host/input_injector_chromeos.cc

Index: remoting/host/input_injector_chromeos.cc
diff --git a/remoting/host/input_injector_chromeos.cc b/remoting/host/input_injector_chromeos.cc
index 26eeae17dbb1c25172386ef93d30144e9c5ee0cb..700df47f1f789f0a5e4f177f07d6c51d56d7a2fd 100644
--- a/remoting/host/input_injector_chromeos.cc
+++ b/remoting/host/input_injector_chromeos.cc
@@ -24,6 +24,7 @@ using protocol::ClipboardEvent;
 using protocol::KeyEvent;
 using protocol::MouseEvent;
 using protocol::TextEvent;
+using protocol::TouchEvent;
 
 namespace {
 
@@ -199,6 +200,10 @@ void InputInjectorChromeos::InjectMouseEvent(const MouseEvent& event) {
                             base::Unretained(core_.get()), event));
 }
 
+void InputInjectorChromeos::InjectTouchEvent(const TouchEvent& event) {
+  NOTIMPLEMENTED() << "Raw touch event injection not implemented for ChromeOS.";
+}
+
 void InputInjectorChromeos::Start(
     scoped_ptr<protocol::ClipboardStub> client_clipboard) {
   input_task_runner_->PostTask(