Tweaks layoutTests to use eventSender.setTouchPointRadius correctly

LayoutTests/fast/events/touch/script-tests/basic-single-touch-events.js

Index: LayoutTests/fast/events/touch/script-tests/basic-single-touch-events.js
diff --git a/LayoutTests/fast/events/touch/script-tests/basic-single-touch-events.js b/LayoutTests/fast/events/touch/script-tests/basic-single-touch-events.js
index 0741c8c0a57df6241b0f42f6d445671c8438fb03..58e268e3b44fe45a01b408aa3faefa7fe728934e 100644
--- a/LayoutTests/fast/events/touch/script-tests/basic-single-touch-events.js
+++ b/LayoutTests/fast/events/touch/script-tests/basic-single-touch-events.js
@@ -92,13 +92,11 @@ function verifyTouch(which) {
 
 function singleTouchSequence()
 {
-    if (eventSender.setTouchPointRadius)
-        eventSender.setTouchPointRadius(10,10);
-    eventSender.addTouchPoint(10, 10);
+    eventSender.addTouchPoint(10, 10, 10, 10);

[Rick Byers, 2015/03/12 14:24:40]

If we've got setTouchPointRadius, then let's just use that instead of allowing
radius to be supplied via addTouchPoint.  You just need to call
setTouchPointRadius after calling addTouchPoint but before calling touchStart.

All I'm aiming for here is a single pattern for setting the extended properties
like radius and tilt...

[d.pikalov, 2015/03/16 16:48:44]

There is problem - setTouchPointRadius() sets event's state to StateMoved,
calling this method before eventSender.touchStart() causes StateMoved before
StatePressed - as a result I get 'unexpected timeout'. I going to add one more
parameter (bool set_state_moved) to setTouchPointRadius()

Btw, I guess there are no reasons to keep eventSender.setTouchPointRadius under
"if", right ?

[Rick Byers, 2015/03/16 18:43:17]

Ah, sorry I didn't appreciate that this was more complex.  I was thinking it was
trivial.  What you've done seems fine.
Right, I'd like to get rid of it (it adds uncertainty for the reader of the
test).  But there's a staging problem - you can't (at least for a few more
weeks) land chromium and blink changes atomically.  So you probably need to land
this CL first, then lend the change to event_sender, then submit a 3rd CL to
remove the 'if(eventSender.setTouchPointRadius)' checks.

     eventSender.touchStart();
 
     if (eventSender.setTouchPointRadius)
-        eventSender.setTouchPointRadius(12,12);
+        eventSender.setTouchPointRadius(0,12,12);
     eventSender.updateTouchPoint(0, 50, 50);
     eventSender.setTouchModifier("shift", true);
     eventSender.setTouchModifier("alt", true);