Rename WindowTreeHost functions to indicate pixels/dips.

ash/magnifier/magnification_controller.cc

Index: ash/magnifier/magnification_controller.cc
diff --git a/ash/magnifier/magnification_controller.cc b/ash/magnifier/magnification_controller.cc
index cbd04b3d03cc9046e8eedbfc47c6c19899ea8984..80c96ec57ac4c1e194c8d8675441663e8e441735 100644
--- a/ash/magnifier/magnification_controller.cc
+++ b/ash/magnifier/magnification_controller.cc
@@ -74,7 +74,7 @@ const int kCaretPanningMargin = 50;
 void MoveCursorTo(aura::WindowTreeHost* host, const gfx::Point& root_location) {
   auto host_location_3f = gfx::Point3F(gfx::PointF(root_location));
   host->GetRootTransform().TransformPoint(&host_location_3f);
-  host->MoveCursorToHostLocation(
+  host->MoveCursorToHostLocationInPixel(
       gfx::ToCeiledPoint(host_location_3f.AsPointF()));
 }