Makes mouse-hover prevent notification toasts from moving.

ui/message_center/views/toast_contents_view.cc

Index: ui/message_center/views/toast_contents_view.cc
diff --git a/ui/message_center/views/toast_contents_view.cc b/ui/message_center/views/toast_contents_view.cc
index d3e72e4184192b6bba9f4b91238ea21b264839c0..03ef309f511c46bb6e8289817b3596f7423b54c8 100644
--- a/ui/message_center/views/toast_contents_view.cc
+++ b/ui/message_center/views/toast_contents_view.cc
@@ -106,7 +106,7 @@ void ToastContentsView::ResetTimeout(int priority) {
 }
 
 void ToastContentsView::SuspendTimer() {
-  if (!timer_.get())
+  if (!timer_.get() || !timer_->IsRunning())
     return;
   timer_->Stop();
   passed_ += base::Time::Now() - start_time_;
@@ -261,12 +261,12 @@ bool ToastContentsView::CanActivate() const {
 // views::View
 void ToastContentsView::OnMouseEntered(const ui::MouseEvent& event) {
   if (collection_)
-    collection_->OnMouseEntered();
+    collection_->OnMouseEntered(this);
 }
 
 void ToastContentsView::OnMouseExited(const ui::MouseEvent& event) {
   if (collection_)
-    collection_->OnMouseExited();
+    collection_->OnMouseExited(this);
 }
 
 void ToastContentsView::Layout() {