Fixes positioning of shadow layer

ash/mus/shadow.cc

Index: ash/mus/shadow.cc
diff --git a/ash/mus/shadow.cc b/ash/mus/shadow.cc
index 6be4d45f744a341f7d7bbae0b32431e451f55779..21be30480c71cf9125de82664655609976d31dbd 100644
--- a/ash/mus/shadow.cc
+++ b/ash/mus/shadow.cc
@@ -207,13 +207,12 @@ void Shadow::UpdateLayerBounds() {
       gfx::Rect(aperture_x, aperture_y, aperture_x * 2, aperture_y * 2));
 
   // The content bounds in the shadow's layer space are offsetted by
-  // |interior_inset_|. The occlusion area also has to be shrinked to
-  // allow rounded corners overdrawing on top of the window's content.
-  gfx::Rect content_bounds(
-      content_bounds_.x() + interior_inset_ + kRoundedCornerRadius,
-      content_bounds_.y() + interior_inset_ + kRoundedCornerRadius,
-      content_bounds_.width() - 2 * kRoundedCornerRadius,
-      content_bounds_.height() - 2 * kRoundedCornerRadius);
+  // |interior_inset_|. The occlusion area also has to be shrunk to allow
+  // rounded corners overdrawing on top of the window's content.
+  gfx::Rect content_bounds(interior_inset_ + kRoundedCornerRadius,
+                           interior_inset_ + kRoundedCornerRadius,
+                           content_bounds_.width() - 2 * kRoundedCornerRadius,
+                           content_bounds_.height() - 2 * kRoundedCornerRadius);
   shadow_layer_->UpdateNinePatchOcclusion(content_bounds);
 }