events: Change gesture-event handler in EventHandler to not return any values.

ash/drag_drop/drag_drop_controller_unittest.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/drag_drop/drag_drop_controller.h"
 
 #include "ash/drag_drop/drag_image_view.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "base/command_line.h"
@@ skipping 67 matching lines @@
     gfx::ImageSkiaRep* image = new gfx::ImageSkiaRep(
         gfx::Size(10, 20), ui::SCALE_FACTOR_100P);
     gfx::ImageSkia* image_skia = new gfx::ImageSkia(*image);
     provider.set_drag_image(*image_skia);
   }
 
   bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE {
     return true;
   }
 
-  ui::EventResult OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
+  void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
     if (event->type() == ui::ET_GESTURE_LONG_TAP)
       long_tap_received_ = true;
-    return ui::ER_UNHANDLED;
+    return;
   }
 
   bool GetDropFormats(int* formats,
                       std::set<OSExchangeData::CustomFormat>* custom_formats) {
     *formats = ui::OSExchangeData::STRING;
     return true;
   }
 
   bool CanDrop(const OSExchangeData& data) OVERRIDE {
     return true;
@@ skipping 866 matching lines @@
     EXPECT_EQ("405,405", observer.window_location_on_destroying().ToString());
   }
   for (Shell::RootWindowList::iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter) {
     aura::client::SetDragDropClient(*iter, NULL);
   }
 }
 
 }  // namespace test
 }  // namespace aura