Delete layout_viewport_size.

cc/input/pinch_zoom_scrollbar.cc

Index: cc/input/pinch_zoom_scrollbar.cc
diff --git a/cc/input/pinch_zoom_scrollbar.cc b/cc/input/pinch_zoom_scrollbar.cc
index e28781011b9517e6a8a366a49acc517cb8ddd009..764a2b9637d8ddd6b4fd52a863cbcaf7d20cd861 100644
--- a/cc/input/pinch_zoom_scrollbar.cc
+++ b/cc/input/pinch_zoom_scrollbar.cc
@@ -7,6 +7,7 @@
 #include "cc/input/pinch_zoom_scrollbar_geometry.h"
 #include "cc/layers/layer.h"
 #include "cc/trees/layer_tree_host.h"
+#include "ui/gfx/size_conversions.h"
 
 namespace cc {
 
@@ -39,7 +40,8 @@ WebKit::WebPoint PinchZoomScrollbar::location() const {
 }
 
 WebKit::WebSize PinchZoomScrollbar::size() const {
-  gfx::Size viewport_size = owner_->layout_viewport_size();
+  gfx::Size viewport_size = gfx::ToCeiledSize(gfx::ScaleSize(

[danakj, 2013/04/09 00:04:35]

Is there a nice way to not duplicate this logic with LTH?

+      owner_->device_viewport_size(), 1 / owner_->device_scale_factor()));
   gfx::Size size;
   int track_width = PinchZoomScrollbarGeometry::kTrackWidth;
   if (orientation_ == WebKit::WebScrollbar::Horizontal)