Rename WindowTreeHost functions to indicate pixels/dips.

ui/aura/window_tree_host_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/aura/test/aura_test_base.h"
 #include "ui/aura/test/test_screen.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/layer.h"
 
 namespace aura {
@@ skipping 11 matching lines @@
   // Size should be rounded up after scaling.
   EXPECT_EQ(gfx::Rect(0, 0, 534, 400), root_window()->bounds());
 
   gfx::Transform transform;
   transform.Translate(0, 1.1f);
   host()->SetRootTransform(transform);
   EXPECT_EQ(gfx::Rect(0, 1, 534, 401), root_window()->bounds());
 
   gfx::Insets padding(1, 2, 3, 4);
   // Padding is in physical pixels.
-  host()->SetOutputSurfacePadding(padding);
+  host()->SetOutputSurfacePaddingInPixels(padding);
   gfx::Rect padded_rect = starting_bounds;
   padded_rect.Inset(-padding);
   EXPECT_EQ(padded_rect.size(), host()->compositor()->size());
   EXPECT_EQ(starting_bounds, host()->GetBoundsInPixels());
   EXPECT_EQ(gfx::Rect(1, 1, 534, 401), root_window()->bounds());
   EXPECT_EQ(gfx::Vector2dF(0, 0),
             host()->compositor()->root_layer()->subpixel_position_offset());
 }
 
 }  // namespace aura