Reland: cc: Fix size_t to int truncations in layers/ output/ playback/ quads/

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 ee9c74843cbde28add14bb5bb84e887a27205e28..b738e34f532e6e71586a42df27539b8cafd427be 100644
--- a/cc/quads/render_pass_draw_quad.cc
+++ b/cc/quads/render_pass_draw_quad.cc
@@ -31,7 +31,6 @@ void RenderPassDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
                                 const gfx::Vector2dF& filters_scale,
                                 const FilterOperations& background_filters) {
   DCHECK_GT(render_pass_id.layer_id, 0);
-  DCHECK_GE(render_pass_id.index, 0);
 
   gfx::Rect opaque_rect;
   bool needs_blending = false;
@@ -62,7 +61,6 @@ void RenderPassDrawQuad::SetAll(const SharedQuadState* shared_quad_state,
                                 const gfx::Vector2dF& filters_scale,
                                 const FilterOperations& background_filters) {
   DCHECK_GT(render_pass_id.layer_id, 0);
-  DCHECK_GE(render_pass_id.index, 0);
 
   DrawQuad::SetAll(shared_quad_state, DrawQuad::RENDER_PASS, rect, opaque_rect,
                    visible_rect, needs_blending);