Make ToplevelWindowEventFilter and WorkspaceEventFilter into event handlers.

ash/wm/workspace/workspace_event_handler_test_helper.h

Index: ash/wm/workspace/workspace_event_handler_test_helper.h
===================================================================
--- ash/wm/workspace/workspace_event_handler_test_helper.h	(revision 155914)
+++ ash/wm/workspace/workspace_event_handler_test_helper.h	(working copy)
@@ -2,30 +2,30 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_WM_WORKSPACE_WORKSPACE_EVENT_FILTER_TEST_HELPER_H_
-#define ASH_WM_WORKSPACE_WORKSPACE_EVENT_FILTER_TEST_HELPER_H_
+#ifndef ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_TEST_HELPER_H_
+#define ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_TEST_HELPER_H_
 
-#include "ash/wm/workspace/workspace_event_filter.h"
+#include "ash/wm/workspace/workspace_event_handler.h"
 
 namespace ash {
 namespace internal {
 
-class WorkspaceEventFilterTestHelper {
+class WorkspaceEventHandlerTestHelper {
  public:
-  explicit WorkspaceEventFilterTestHelper(WorkspaceEventFilter* filter);
-  ~WorkspaceEventFilterTestHelper();
+  explicit WorkspaceEventHandlerTestHelper(WorkspaceEventHandler* handler);
+  ~WorkspaceEventHandlerTestHelper();
 
   MultiWindowResizeController* resize_controller() {
-    return &(filter_->multi_window_resize_controller_);
+    return &(handler_->multi_window_resize_controller_);
   }
 
  private:
-  WorkspaceEventFilter* filter_;
+  WorkspaceEventHandler* handler_;
 
-  DISALLOW_COPY_AND_ASSIGN(WorkspaceEventFilterTestHelper);
+  DISALLOW_COPY_AND_ASSIGN(WorkspaceEventHandlerTestHelper);
 };
 
 }  // namespace internal
 }  // namespace ash
 
-#endif  // ASH_WM_WORKSPACE_WORKSPACE_EVENT_FILTER_TEST_HELPER_H_
+#endif  // ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_TEST_HELPER_H_