aura: Remove event-dispatch methods from WindowTreeHostDelegate interface.

ui/aura/root_window_host_x11_unittest.cc

Index: ui/aura/root_window_host_x11_unittest.cc
diff --git a/ui/aura/root_window_host_x11_unittest.cc b/ui/aura/root_window_host_x11_unittest.cc
index 4070bbe8696400e286bba20f21ee2b97ec8844f5..4efb8fd4630ce38780cf90f1de1e1ad84378be6c 100644
--- a/ui/aura/root_window_host_x11_unittest.cc
+++ b/ui/aura/root_window_host_x11_unittest.cc
@@ -26,22 +26,6 @@ class TestWindowTreeHostDelegate : public aura::WindowTreeHostDelegate,
   virtual ~TestWindowTreeHostDelegate() {}
 
   // aura::WindowTreeHostDelegate:
-  virtual bool OnHostKeyEvent(ui::KeyEvent* event) OVERRIDE {
-    return true;
-  }
-  virtual bool OnHostMouseEvent(ui::MouseEvent* event) OVERRIDE {
-    return true;
-  }
-  virtual bool OnHostScrollEvent(ui::ScrollEvent* event) OVERRIDE {
-    return true;
-  }
-  virtual bool OnHostTouchEvent(ui::TouchEvent* event) OVERRIDE {
-    last_touch_id_ = event->touch_id();
-    last_touch_type_ = event->type();
-    last_touch_location_ = event->location();
-    return true;
-  }
-
   virtual void OnHostCancelMode() OVERRIDE {}
   virtual void OnHostActivated() OVERRIDE {}
   virtual void OnHostLostWindowCapture() OVERRIDE {}