Fix a trace value type in RenderPassDrawQuad.

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 88f608d4ce8a3d9940f9b66712ab249637105143..d3aeb05c62e62b36175aff3dc5465c1984ee9b5e 100644
--- a/cc/quads/render_pass_draw_quad.cc
+++ b/cc/quads/render_pass_draw_quad.cc
@@ -99,9 +99,9 @@ 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->BeginArray("mask_texture_size");
+  value->BeginDictionary("mask_texture_size");

[danakj, 2015/01/12 18:03:22]

Oof, this is kinda meh. We can surely make a better api on MathUtil to do this,
maybe pass it the string, the variable, and the value, and have it decide the
type internally.

[JungJik, 2015/01/13 01:04:42]

thanks for the review.
I understand your intention and will file a new patch.

   MathUtil::AddToTracedValue(mask_texture_size, value);
-  value->EndArray();
+  value->EndDictionary();
 
   value->BeginArray("mask_uv_scale");
   MathUtil::AddToTracedValue(mask_uv_scale, value);