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

chrome/browser/ui/views/download/download_item_view.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 "chrome/browser/ui/views/download/download_item_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 487 matching lines @@
     state->state = ui::AccessibilityTypes::STATE_UNAVAILABLE;
   } else {
     state->state = ui::AccessibilityTypes::STATE_HASPOPUP;
   }
 }
 
 void DownloadItemView::OnThemeChanged() {
   UpdateColorsFromTheme();
 }
 
-ui::EventResult DownloadItemView::OnGestureEvent(ui::GestureEvent* event) {
+void DownloadItemView::OnGestureEvent(ui::GestureEvent* event) {
   if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
     HandlePressEvent(*event, true);
-    return ui::ER_CONSUMED;
+    event->SetHandled();
+    return;
   }
 
   if (event->type() == ui::ET_GESTURE_TAP) {
     HandleClickEvent(*event, true);
-    return ui::ER_CONSUMED;
+    event->SetHandled();
+    return;
   }
 
   SetState(NORMAL, NORMAL);
-  return views::View::OnGestureEvent(event);
+  views::View::OnGestureEvent(event);
 }
 
 void DownloadItemView::ShowContextMenuForView(View* source,
                                               const gfx::Point& point) {
   // |point| is in screen coordinates. So convert it to local coordinates first.
   gfx::Point local_point = point;
   ConvertPointFromScreen(this, &local_point);
   ShowContextMenuImpl(local_point, true);
 }
 
@@ skipping 692 matching lines @@
 void DownloadItemView::AnimateStateTransition(State from, State to,
                                               ui::SlideAnimation* animation) {
   if (from == NORMAL && to == HOT) {
     animation->Show();
   } else if (from == HOT && to == NORMAL) {
     animation->Hide();
   } else if (from != to) {
     animation->Reset((to == HOT) ? 1.0 : 0.0);
   }
 }