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

cc/quads/render_pass.h

Index: cc/quads/render_pass.h
diff --git a/cc/quads/render_pass.h b/cc/quads/render_pass.h
index 0f57faed7bdee8f8b0bd0944303afeda5f141219..8c31d82349a17c11da5ddc0f6cf7ce576d80593e 100644
--- a/cc/quads/render_pass.h
+++ b/cc/quads/render_pass.h
@@ -136,7 +136,7 @@ namespace BASE_HASH_NAMESPACE {
 template <>
 struct hash<cc::RenderPassId> {
   size_t operator()(cc::RenderPassId key) const {
-    return base::HashPair(key.layer_id, key.index);
+    return base::HashPair(key.layer_id, static_cast<int>(key.index));
   }
 };
 }  // namespace BASE_HASH_NAMESPACE