Add timestamps to synthesized events.

content/browser/renderer_host/input/synthetic_gesture.cc

Index: content/browser/renderer_host/input/synthetic_gesture.cc
diff --git a/content/browser/renderer_host/input/synthetic_gesture.cc b/content/browser/renderer_host/input/synthetic_gesture.cc
index 8b2b3bedbe63ca9166056987e68b7a47e6e70646..190ff4a5e0b143dc7ae6799304b0e6624d375eae 100644
--- a/content/browser/renderer_host/input/synthetic_gesture.cc
+++ b/content/browser/renderer_host/input/synthetic_gesture.cc
@@ -43,4 +43,10 @@ scoped_ptr<SyntheticGesture> SyntheticGesture::Create(
   return scoped_ptr<SyntheticGesture>();
 }
 
+// static
+double SyntheticGesture::ConvertTimestampToSeconds(
+    const base::TimeTicks& timestamp) {
+  return (timestamp - base::TimeTicks::UnixEpoch()).InSecondsF();

[jdduke (slow), 2014/01/03 18:24:30]

The documentation for WebInputEvent is somewhat misleading, we really want the
*system* time, not the *wall clock* time.  So this should read:

return (timestamp - base::TimeTicks()).InSecondsF();

Then you shouldn't need to convert between wall and system times later on.

[Dominik Grewe, 2014/01/06 11:46:07]

Done.

+}
+
 }  // namespace content