Rename WindowTreeHost functions to indicate pixels/dips.

ash/autoclick/autoclick_controller.cc

Index: ash/autoclick/autoclick_controller.cc
diff --git a/ash/autoclick/autoclick_controller.cc b/ash/autoclick/autoclick_controller.cc
index 0cf79e90e0d8f431642d0a539c703a779058c9d3..7b45c064bbb902203b3136c8a1d5c7add8e9d3b7 100644
--- a/ash/autoclick/autoclick_controller.cc
+++ b/ash/autoclick/autoclick_controller.cc
@@ -180,7 +180,7 @@ void AutoclickControllerImpl::DoAutoclick(const gfx::Point& event_location,
   gfx::Point click_location(event_location);
   ::wm::ConvertPointFromScreen(root_window, &click_location);
   aura::WindowTreeHost* host = root_window->GetHost();
-  host->ConvertPointToHost(&click_location);
+  host->ConvertDIPToPixels(&click_location);
 
   ui::MouseEvent press_event(ui::ET_MOUSE_PRESSED, click_location,
                              click_location, ui::EventTimeForNow(),