Remove Owner param to EventFilter's ctor.

ash/tooltips/tooltip_controller.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/tooltips/tooltip_controller.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "ash/shell.h"
@@ skipping 182 matching lines @@
         gfx::Screen::GetMonitorAreaNearestPoint(tooltip_rect.origin());
     widget_->SetBounds(tooltip_rect.AdjustToFit(monitor_bounds));
   }
 
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 // TooltipController public:
 
 TooltipController::TooltipController()
-    : aura::EventFilter(NULL),
-      tooltip_window_(NULL),
+    : tooltip_window_(NULL),
       tooltip_(new Tooltip),
       tooltips_enabled_(true) {
   tooltip_timer_.Start(FROM_HERE,
       base::TimeDelta::FromMilliseconds(kTooltipTimeoutMs),
       this, &TooltipController::TooltipTimerFired);
 }
 
 TooltipController::~TooltipController() {
   if (tooltip_window_)
     tooltip_window_->RemoveObserver(this);
@@ skipping 106 matching lines @@
     }
   }
 }
 
 bool TooltipController::IsTooltipVisible() {
   return tooltip_->IsVisible();
 }
 
 }  // namespace internal
 }  // namespace ash