Provide access to the WindowEventDispatcher as a ui::EventProcessor.

ui/views/corewm/input_method_event_filter_unittest.cc

Index: ui/views/corewm/input_method_event_filter_unittest.cc
diff --git a/ui/views/corewm/input_method_event_filter_unittest.cc b/ui/views/corewm/input_method_event_filter_unittest.cc
index 32995aba88b6b75aed963a15401efe88066f7b38..78abb756d4da3a0c4373c622de4fb496b7bb74ef 100644
--- a/ui/views/corewm/input_method_event_filter_unittest.cc
+++ b/ui/views/corewm/input_method_event_filter_unittest.cc
@@ -32,7 +32,7 @@ TEST_F(InputMethodEventFilterTest, TestInputMethodProperty) {
   root_window()->SetEventFilter(root_filter);
 
   InputMethodEventFilter input_method_event_filter(
-      dispatcher()->host()->GetAcceleratedWidget());
+      host()->GetAcceleratedWidget());
   root_filter->AddHandler(&input_method_event_filter);
 
   // Tests if InputMethodEventFilter adds a window property on its
@@ -51,7 +51,7 @@ TEST_F(InputMethodEventFilterTest, TestInputMethodKeyEventPropagation) {
 
   // Add the InputMethodEventFilter before the TestEventFilter.
   InputMethodEventFilter input_method_event_filter(
-      dispatcher()->host()->GetAcceleratedWidget());
+      host()->GetAcceleratedWidget());
   root_filter->AddHandler(&input_method_event_filter);
 
   // Add TestEventFilter to the RootWindow.