[DevTools] Interactive test for DevTools touch emulation.

content/browser/renderer_host/input/touch_emulator.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/input/touch_emulator.h"
 
 #include "content/browser/renderer_host/input/motion_event_web.h"
 #include "content/browser/renderer_host/input/web_input_event_util.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
@@ skipping 313 matching lines @@
 
 bool TouchEmulator::FillTouchEventAndPoint(const WebMouseEvent& mouse_event) {
   if (mouse_event.type != WebInputEvent::MouseDown &&
       mouse_event.type != WebInputEvent::MouseMove &&
       mouse_event.type != WebInputEvent::MouseUp) {
     return false;
   }
 
   touch_event_.touchesLength = 1;
   touch_event_.timeStampSeconds = mouse_event.timeStampSeconds;
+  if (!touch_event_.timeStampSeconds) {

[jdduke (slow), 2014/04/23 16:35:53]

Why not have the tests fill the timeStampSeconds? I'd rather do that and DCHECK
here.

[dgozman, 2014/04/23 17:27:20]

I would like that too, but interactive test issues platform events in many
different places (at least one per platform/configuration), and I doubt that I
can fix them all.

+    // Gesture detector does not tolerate null timestamps generated in tests.
+    touch_event_.timeStampSeconds =
+        (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
+  }
   touch_event_.modifiers = mouse_event.modifiers;
 
   WebTouchPoint& point = touch_event_.touches[0];
   point.id = 0;
   point.radiusX = point.radiusY = 1.f;
   point.force = 1.f;
   point.rotationAngle = 0.f;
   point.position.x = mouse_event.x;
   point.screenPosition.x = mouse_event.globalX;
   point.position.y = mouse_event.y;
@@ skipping 18 matching lines @@
       NOTREACHED();
   }
   return true;
 }
 
 bool TouchEmulator::InPinchGestureMode() const {
   return shift_pressed_ && allow_pinch_;
 }
 
 }  // namespace content