MacViews: Split ViewEventTestBase into platform-specific files.

chrome/test/base/view_event_test_base.h

Index: chrome/test/base/view_event_test_base.h
diff --git a/chrome/test/base/view_event_test_base.h b/chrome/test/base/view_event_test_base.h
index 424ef0f2a32063305410cd6e9032453474972b0b..a3d7290abafd04b8363d4663b3bc6bc429453032 100644
--- a/chrome/test/base/view_event_test_base.h
+++ b/chrome/test/base/view_event_test_base.h
@@ -24,19 +24,11 @@
 #include "ui/base/win/scoped_ole_initializer.h"
 #endif
 
-namespace aura {
-namespace test {
-class AuraTestHelper;
-}
-}
-
 namespace gfx {
 class Size;
 }
 
-namespace wm {
-class WMState;
-}
+class ViewEventTestPlatformPart;
 
 // Base class for Views based tests that dispatch events.
 //
@@ -154,10 +146,7 @@ class ViewEventTestBase : public views::WidgetDelegate,
   ui::ScopedOleInitializer ole_initializer_;
 #endif
 
-#if defined(USE_AURA)
-  scoped_ptr<aura::test::AuraTestHelper> aura_test_helper_;
-  scoped_ptr<wm::WMState> wm_state_;
-#endif
+  scoped_ptr<ViewEventTestPlatformPart> platform_part_;
 
   ChromeViewsDelegate views_delegate_;