Rename WindowTreeHost G|SetBounds to indicate they are in pixels.

ash/host/ash_window_tree_host_platform.cc

Index: ash/host/ash_window_tree_host_platform.cc
diff --git a/ash/host/ash_window_tree_host_platform.cc b/ash/host/ash_window_tree_host_platform.cc
index 8f140ba9085475b8ad9daee4a5b40b92fdbdbcdb..b9465a5f98be79dea18928c3bfa4e3ba70140f6a 100644
--- a/ash/host/ash_window_tree_host_platform.cc
+++ b/ash/host/ash_window_tree_host_platform.cc
@@ -44,7 +44,7 @@ void AshWindowTreeHostPlatform::ToggleFullScreen() {
 }
 
 bool AshWindowTreeHostPlatform::ConfineCursorToRootWindow() {
-  gfx::Rect confined_bounds(GetBounds().size());
+  gfx::Rect confined_bounds(GetBoundsInPixel().size());
   confined_bounds.Inset(transformer_helper_.GetHostInsets());
   platform_window()->ConfineCursorToBounds(confined_bounds);
   return true;
@@ -99,8 +99,8 @@ void AshWindowTreeHostPlatform::OnCursorVisibilityChangedNative(bool show) {
   SetTapToClickPaused(!show);
 }
 
-void AshWindowTreeHostPlatform::SetBounds(const gfx::Rect& bounds) {
-  WindowTreeHostPlatform::SetBounds(bounds);
+void AshWindowTreeHostPlatform::SetBoundsInPixel(const gfx::Rect& bounds) {
+  WindowTreeHostPlatform::SetBoundsInPixel(bounds);
   ConfineCursorToRootWindow();
 }