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

ui/views/controls/textfield/textfield_unittest.cc

Index: ui/views/controls/textfield/textfield_unittest.cc
diff --git a/ui/views/controls/textfield/textfield_unittest.cc b/ui/views/controls/textfield/textfield_unittest.cc
index be3f3bbe52c579aa1d0d581d3122f88ff92e81d4..c21fa519b2adbacfa63c61c9b35c95d4aa0463f4 100644
--- a/ui/views/controls/textfield/textfield_unittest.cc
+++ b/ui/views/controls/textfield/textfield_unittest.cc
@@ -306,7 +306,7 @@ class TestTextfield : public views::Textfield {
 class GestureEventForTest : public ui::GestureEvent {
  public:
   GestureEventForTest(int x, int y, ui::GestureEventDetails details)
-      : GestureEvent(x, y, 0, base::TimeDelta(), details) {}
+      : GestureEvent(x, y, 0, base::TimeTicks(), details) {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GestureEventForTest);