Change ui::Event::time_stamp from TimeDelta to TimeTicks

base/time/time.cc

Index: base/time/time.cc
diff --git a/base/time/time.cc b/base/time/time.cc
index 76ffeb744112d1909afa9b488bcfa277950225bb..a99651511951c0d3cf4e4b6551bce1df04e93536 100644
--- a/base/time/time.cc
+++ b/base/time/time.cc
@@ -136,11 +136,6 @@ std::ostream& operator<<(std::ostream& os, TimeDelta time_delta) {
 // Time -----------------------------------------------------------------------
 
 // static
-Time Time::Max() {
-  return Time(std::numeric_limits<int64_t>::max());
-}
-
-// static
 Time Time::FromTimeT(time_t tt) {
   if (tt == 0)
     return Time();  // Preserve 0 so we can tell it doesn't exist.