Update from https://crrev.com/312398

cc/quads/draw_quad.cc

Index: cc/quads/draw_quad.cc
diff --git a/cc/quads/draw_quad.cc b/cc/quads/draw_quad.cc
index 7322a7afa1a5de0058f386ee5263ef3950e0836b..f8f00b6229d730d29850afcf36649892442c7360 100644
--- a/cc/quads/draw_quad.cc
+++ b/cc/quads/draw_quad.cc
@@ -61,39 +61,31 @@ void DrawQuad::AsValueInto(base::debug::TracedValue* value) const {
   value->SetInteger("material", material);
   TracedValue::SetIDRef(shared_quad_state, value, "shared_state");
 
-  value->BeginArray("content_space_rect");
-  MathUtil::AddToTracedValue(rect, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("content_space_rect", rect, value);
 
   bool rect_is_clipped;
   gfx::QuadF rect_as_target_space_quad = MathUtil::MapQuad(
       shared_quad_state->content_to_target_transform,
       gfx::QuadF(rect),
       &rect_is_clipped);
-  value->BeginArray("rect_as_target_space_quad");
-  MathUtil::AddToTracedValue(rect_as_target_space_quad, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("rect_as_target_space_quad",
+                             rect_as_target_space_quad, value);
 
   value->SetBoolean("rect_is_clipped", rect_is_clipped);
 
-  value->BeginArray("content_space_opaque_rect");
-  MathUtil::AddToTracedValue(opaque_rect, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("content_space_opaque_rect", opaque_rect, value);
 
   bool opaque_rect_is_clipped;
   gfx::QuadF opaque_rect_as_target_space_quad = MathUtil::MapQuad(
       shared_quad_state->content_to_target_transform,
       gfx::QuadF(opaque_rect),
       &opaque_rect_is_clipped);
-  value->BeginArray("opaque_rect_as_target_space_quad");
-  MathUtil::AddToTracedValue(opaque_rect_as_target_space_quad, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("opaque_rect_as_target_space_quad",
+                             opaque_rect_as_target_space_quad, value);
 
   value->SetBoolean("opaque_rect_is_clipped", opaque_rect_is_clipped);
 
-  value->BeginArray("content_space_visible_rect");
-  MathUtil::AddToTracedValue(visible_rect, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("content_space_visible_rect", visible_rect, value);
 
   bool visible_rect_is_clipped;
   gfx::QuadF visible_rect_as_target_space_quad = MathUtil::MapQuad(
@@ -101,9 +93,8 @@ void DrawQuad::AsValueInto(base::debug::TracedValue* value) const {
       gfx::QuadF(visible_rect),
       &visible_rect_is_clipped);
 
-  value->BeginArray("visible_rect_as_target_space_quad");
-  MathUtil::AddToTracedValue(visible_rect_as_target_space_quad, value);
-  value->EndArray();
+  MathUtil::AddToTracedValue("visible_rect_as_target_space_quad",
+                             visible_rect_as_target_space_quad, value);
 
   value->SetBoolean("visible_rect_is_clipped", visible_rect_is_clipped);