Revert of Fix sticky keys crash when handling synthetic events without a native event. (https://codereview.chromium.org/227113009/)

Reason for revert:
Breaks compile on Linux ChromiumOS (Clang dbg) 

.../sticky_keys_unittest.cc:848:3:error: ignoring return value of function declared with warn_unused_result attribute [-Werror,-Wunused-result]
  dispatcher->OnEventFromSource(kev.get());
(and 2 more)

link: http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20%28Clang%20dbg%29/builds/922/

Original issue's description:
> Fix sticky keys crash when handling synthetic events without a native event.
> 
> BUG=358270
> TEST=modified tests
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=262465

TBR=sadrul@chromium.org,tengs@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=358270

Review URL: https://codereview.chromium.org/229053002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@262469 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 10 deletions

diff --git a/ash/sticky_keys/sticky_keys_controller.cc b/ash/sticky_keys/sticky_keys_controller.cc
index 45c1248..e5bb0af 100644
--- a/ash/sticky_keys/sticky_keys_controller.cc
+++ b/ash/sticky_keys/sticky_keys_controller.cc
@@ -69,18 +69,10 @@ void StickyKeysHandlerDelegateImpl::DispatchMouseEvent(ui::MouseEvent* event,
   DCHECK(target);
   // We need to send a new, untransformed mouse event to the host.
   if (event->IsMouseWheelEvent()) {
-    aura::Window* source = static_cast<aura::Window*>(event->target());
-    ui::MouseWheelEvent new_event(*static_cast<ui::MouseWheelEvent*>(event),
-                                  source,
-                                  source->GetRootWindow());
-    // Transform the location back to host coordinates before dispatching.
-    new_event.UpdateForRootTransform(source->GetHost()->GetRootTransform());
+    ui::MouseWheelEvent new_event(event->native_event());
     DispatchEvent(&new_event, target);
   } else {
-    aura::Window* source = static_cast<aura::Window*>(event->target());
-    ui::MouseEvent new_event(*event, source, source->GetRootWindow());
-    // Transform the location back to host coordinates before dispatching.
-    new_event.UpdateForRootTransform(source->GetHost()->GetRootTransform());
+    ui::MouseEvent new_event(event->native_event());
     DispatchEvent(&new_event, target);
   }
 }