cc: refactor of MathUtil::AddToTracedValue

cc/quads/render_pass_draw_quad.cc

Index: cc/quads/render_pass_draw_quad.cc
diff --git a/cc/quads/render_pass_draw_quad.cc b/cc/quads/render_pass_draw_quad.cc
index d3aeb05c62e62b36175aff3dc5465c1984ee9b5e..ce5065ff06b792725182be3893240220e47532e5 100644
--- a/cc/quads/render_pass_draw_quad.cc
+++ b/cc/quads/render_pass_draw_quad.cc
@@ -98,22 +98,13 @@ const RenderPassDrawQuad* RenderPassDrawQuad::MaterialCast(
 void RenderPassDrawQuad::ExtendValue(base::debug::TracedValue* value) const {
   TracedValue::SetIDRef(render_pass_id.AsTracingId(), value, "render_pass_id");
   value->SetInteger("mask_resource_id", mask_resource_id);
-
-  value->BeginDictionary("mask_texture_size");
-  MathUtil::AddToTracedValue(mask_texture_size, value);
-  value->EndDictionary();
-
-  value->BeginArray("mask_uv_scale");
-  MathUtil::AddToTracedValue(mask_uv_scale, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("mask_texture_size", mask_texture_size, value);
+  MathUtil::AddToTracedValue("mask_uv_scale", mask_uv_scale, value);
 
   value->BeginDictionary("filters");
   filters.AsValueInto(value);
   value->EndDictionary();
-
-  value->BeginArray("filters_scale");
-  MathUtil::AddToTracedValue(filters_scale, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("filters_scale", filters_scale, value);
 
   value->BeginDictionary("background_filters");
   background_filters.AsValueInto(value);