[autofill] Ingore mouse move on Windows for the first 50ms.

chrome/browser/ui/views/autofill/autofill_popup_base_view.cc

Index: chrome/browser/ui/views/autofill/autofill_popup_base_view.cc
diff --git a/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc b/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc
index dca545416fd2d491f7ad4693afd73de8bfe80cd8..eeb3582a8c52a315c3f70c6f8ac3546ae187159e 100644
--- a/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc
+++ b/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc
@@ -66,6 +66,8 @@ void AutofillPopupBaseView::DoShow() {
 
     // No animation for popup appearance (too distracting).
     widget->SetVisibilityAnimationTransition(views::Widget::ANIMATE_HIDE);
+
+    show_time_ = base::Time::Now();
   }
 
   SetBorder(views::Border::CreateSolidBorder(kPopupBorderThickness,
@@ -143,8 +145,14 @@ void AutofillPopupBaseView::OnMouseExited(const ui::MouseEvent& event) {
 void AutofillPopupBaseView::OnMouseMoved(const ui::MouseEvent& event) {
   // A synthesized mouse move will be sent when the popup is first shown.
   // Don't preview a suggestion if the mouse happens to be hovering there.
+#if defined(OS_WIN)
+  static const int64 kMouseMoveIngoreMs = 50;
+  if ((base::Time::Now() - show_time_).InMilliseconds() <= kMouseMoveIngoreMs)

[Evan Stade, 2015/03/19 20:16:30]

if (base::Time::Now() < show_time_ + TimeDelta::FromMilliseconds(50))

but I feel like we should be using some timestamp on |event| rather than |now|
(there can be a big difference if Chrome is bogged down)

[please use gerrit instead, 2015/03/20 17:36:43]

Done.

+    return;
+#else
   if (event.flags() & ui::EF_IS_SYNTHESIZED)
     return;
+#endif
 
   if (HitTestPoint(event.location()))
     SetSelection(event.location());