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

ash/wm/screen_dimmer_unittest.cc

Index: ash/wm/screen_dimmer_unittest.cc
diff --git a/ash/wm/screen_dimmer_unittest.cc b/ash/wm/screen_dimmer_unittest.cc
index 8ed00ae0ec776f962aa1d029964f5294813538d9..53266525d8646ad61ddd29539a226085bd46e18b 100644
--- a/ash/wm/screen_dimmer_unittest.cc
+++ b/ash/wm/screen_dimmer_unittest.cc
@@ -93,7 +93,7 @@ TEST_F(ScreenDimmerTest, MAYBE_ResizeLayer) {
   // When we resize the root window, the dimming layer should be resized to
   // match.
   gfx::Rect kNewBounds(400, 300);
-  Shell::GetPrimaryRootWindow()->GetHost()->SetBounds(kNewBounds);
+  Shell::GetPrimaryRootWindow()->GetHost()->SetBoundsInPixels(kNewBounds);
   EXPECT_EQ(kNewBounds.ToString(), dimming_layer->bounds().ToString());
 }