clang-format all of //ash

ash/common/system/chromeos/tray_tracing.h

Index: ash/common/system/chromeos/tray_tracing.h
diff --git a/ash/common/system/chromeos/tray_tracing.h b/ash/common/system/chromeos/tray_tracing.h
index c190bf7ccfe3d62f5e8e5a7e8f78f68d4b92fea6..363fc0ccdf01b8b53be51c485a0074f251b49ea1 100644
--- a/ash/common/system/chromeos/tray_tracing.h
+++ b/ash/common/system/chromeos/tray_tracing.h
@@ -26,8 +26,7 @@ class ASH_EXPORT TracingObserver {
 // This is the item that displays when users enable performance tracing at
 // chrome://slow.  It alerts them that this mode is running, and provides an
 // easy way to open the page to disable it.
-class TrayTracing : public TrayImageItem,
-                    public TracingObserver {
+class TrayTracing : public TrayImageItem, public TracingObserver {
  public:
   explicit TrayTracing(SystemTray* system_tray);
   ~TrayTracing() override;