Merge to m48: Fix volume slider to emit value changed events and do not focus system tray it\

ash/system/tray/system_tray.cc

Index: ash/system/tray/system_tray.cc
diff --git a/ash/system/tray/system_tray.cc b/ash/system/tray/system_tray.cc
index 715c7afa7aae85c1acf8096dd12a60ea9115d743..396762c22d48c70615d30e7d32b43668f1349044 100644
--- a/ash/system/tray/system_tray.cc
+++ b/ash/system/tray/system_tray.cc
@@ -98,9 +98,12 @@ class SystemBubbleWrapper {
         views::BubbleBorder::PAINT_NONE);
     is_persistent_ = is_persistent;
 
-    // If ChromeVox is enabled, focus the default item if no item is focused.
-    if (Shell::GetInstance()->accessibility_delegate()->
-        IsSpokenFeedbackEnabled()) {
+    // If ChromeVox is enabled, focus the default item if no item is focused and
+    // there isn't a delayed close.
+    if (Shell::GetInstance()
+            ->accessibility_delegate()
+            ->IsSpokenFeedbackEnabled() &&
+        !is_persistent) {
       bubble_->FocusDefaultIfNeeded();
     }
   }