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

cc/quads/render_pass_id.h

Index: cc/quads/render_pass_id.h
diff --git a/cc/quads/render_pass_id.h b/cc/quads/render_pass_id.h
index 05541307a07eaca2b7c2c720255822aa3db3b104..ebf6387e73c1572a66cd8899a68dee28c2fd6690 100644
--- a/cc/quads/render_pass_id.h
+++ b/cc/quads/render_pass_id.h
@@ -14,9 +14,10 @@ namespace cc {
 class CC_EXPORT RenderPassId {
  public:
   int layer_id;
-  int index;
+  size_t index;
 
-  RenderPassId(int layer_id, int index) : layer_id(layer_id), index(index) {}
+  RenderPassId() : layer_id(-1), index(0) {}
+  RenderPassId(int layer_id, size_t index) : layer_id(layer_id), index(index) {}
   void* AsTracingId() const;
 
   bool operator==(const RenderPassId& other) const {