Do not transform scroll event ordinal values

ash/display/display_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/display/display_controller.h"
 
 #include "ash/ash_switches.h"
 #include "ash/display/display_info.h"
 #include "ash/display/display_layout_store.h"
 #include "ash/display/display_manager.h"
@@ skipping 1130 matching lines @@
   generator.PressMoveAndReleaseTouchTo(50, 50);
   // Default test touches have radius_x/y = 1.0, with device scale
   // factor = 2, the scaled radius_x/y should be 0.5.
   EXPECT_EQ(0.5, event_handler.touch_radius_x());
   EXPECT_EQ(0.5, event_handler.touch_radius_y());
 
   generator.ScrollSequence(gfx::Point(0,0),
                            base::TimeDelta::FromMilliseconds(100),
                            10.0, 1.0, 5, 1);
 
   // With device scale factor = 2, ordinal_offset * 2 = offset.

[oshima, 2013/10/03 09:23:43]

can you update the comment?

[Shecky Lin, 2013/10/03 09:47:11]

Done.

   EXPECT_EQ(event_handler.scroll_x_offset(),
-            event_handler.scroll_x_offset_ordinal() * 2);
+            event_handler.scroll_x_offset_ordinal());
   EXPECT_EQ(event_handler.scroll_y_offset(),
-            event_handler.scroll_y_offset_ordinal() * 2);
+            event_handler.scroll_y_offset_ordinal());
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
 TEST_F(DisplayControllerTest, ConvertHostToRootCoords) {
   if (!SupportsMultipleDisplays())
     return;
 
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
@@ skipping 69 matching lines @@
   EXPECT_EQ("aura_root_0", GetXWindowName(primary));
   EXPECT_EQ("aura_root_x", GetXWindowName(secondary));
 
   // Switching back to single display.
   UpdateDisplay("300x400");
   EXPECT_EQ("aura_root_0", GetXWindowName(Shell::GetPrimaryRootWindow()));
 }
 #endif
 
 }  // namespace ash