deps: V8: cherry-pick 1b5c411ca510

Original commit message:

    [api] mark v8::Script and v8::UnboundScript as v8::Data

    v8::UnboundModuleScript and v8::Module are already v8::Data.
    Mark v8::Script and v8::UnboundScript as v8::Data so that they
    can be used in other V8 APIs that takes v8::Data.

Refs: v8/v8@1b5c411

Author: joyeecheung

common.gypi

@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.15',
+    'v8_embedder_string': '-node.16',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/include/v8-script.h

@@ -55,7 +55,7 @@ class V8_EXPORT ScriptOrModule {
 /**
  * A compiled JavaScript script, not yet tied to a Context.
  */
-class V8_EXPORT UnboundScript {
+class V8_EXPORT UnboundScript : public Data {
  public:
   /**
    * Binds the script to the currently entered context.
@@ -320,7 +320,7 @@ class V8_EXPORT Module : public Data {
  * A compiled JavaScript script, tied to a Context which was active when the
  * script was compiled.
  */
-class V8_EXPORT Script {
+class V8_EXPORT Script : public Data {
  public:
   /**
    * A shorthand for ScriptCompiler::Compile().