events: Update scroll and touch handlers to not return EventResult.

ash/launcher/launcher_tooltip_manager_unittest.cc

Index: ash/launcher/launcher_tooltip_manager_unittest.cc
diff --git a/ash/launcher/launcher_tooltip_manager_unittest.cc b/ash/launcher/launcher_tooltip_manager_unittest.cc
index c6d81ddf556fb08610bb30c22e826b58b987b718..e1464da603fe6dd3595aa72a044205165442082a 100644
--- a/ash/launcher/launcher_tooltip_manager_unittest.cc
+++ b/ash/launcher/launcher_tooltip_manager_unittest.cc
@@ -164,16 +164,16 @@ TEST_F(LauncherTooltipManagerTest, ShouldHideForEvents) {
   ui::TouchEvent touch_event(
       ui::ET_TOUCH_PRESSED, gfx::Point(), 0, base::TimeDelta());
   SetEventTarget(root_window, &touch_event);
-  EXPECT_EQ(ui::ER_UNHANDLED,
-            event_handler->OnTouchEvent(&touch_event));
+  event_handler->OnTouchEvent(&touch_event);
+  EXPECT_FALSE(touch_event.handled());
   EXPECT_FALSE(TooltipIsVisible());
 
   // Shouldn't hide if the touch happens on the tooltip.
   ShowImmediately();
   views::Widget* tooltip_widget = GetTooltipWidget();
   SetEventTarget(tooltip_widget->GetNativeWindow(), &touch_event);
-  EXPECT_EQ(ui::ER_UNHANDLED,
-            event_handler->OnTouchEvent(&touch_event));
+  event_handler->OnTouchEvent(&touch_event);
+  EXPECT_FALSE(touch_event.handled());
   EXPECT_TRUE(TooltipIsVisible());
 
   // Should hide for gesture events.