Set touch event type correctly when the touch point pauses at the tick

Because we can use pause action for touch points that do not move, but
Devtool will generate a touch end event if we do not pass the paused
touch point in the touch point list.
https://cs.chromium.org/chromium/src/content/browser/devtools/protocol/
input_handler.cc?type=cs&q=InputHandler::DispatchWebTouchEvent&g=0&l=825

Therefor, for the paused touch points that are not released, we should
set type of touch move.

Bug: 1020674
Change-Id: I01358b3534a8dde6b2651495034b9ad31a5f13ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1933206Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#718912}

chrome/test/chromedriver/window_commands.cc

@@ -1503,6 +1503,8 @@ Status ExecutePerformActions(Session* session,
                 action_input_states[j]->SetInteger("pressed", 0);
               }
               if (has_touch_start[id]) {
+                if (event.type == kPause)
+                  event.type = kTouchMove;
                 event.id = dispatch_touch_events.size();
                 dispatch_touch_events.push_back(event);
               }