Use MediaCodex object instead of ENCODER.

src/init/bootstrapper.cc

@@ -2786,17 +2786,22 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     InstallToStringTag(isolate_, json_object, "JSON");
   }
 
-  { // -- E N C O D E R
-    Handle<JSObject> encoder =
+  { // -- M E D I A C O D E X
+    Handle<JSObject> media_codex =
         factory->NewJSObject(isolate_->object_function(), AllocationType::kOld);
-    JSObject::AddProperty(isolate_, global, "ENCODER", encoder, DONT_ENUM);
-    SimpleInstallFunction(isolate_, encoder, "init",
+    JSObject::AddProperty(isolate_, global, "MediaCodex", media_codex, DONT_ENUM);
+
+    Handle<JSObject> mp4 =
+        factory->NewJSObject(isolate_->object_function(), AllocationType::kOld);
+    JSObject::AddProperty(isolate_, media_codex, "Mp4", mp4, DONT_ENUM);
+    SimpleInstallFunction(isolate_, mp4, "init",
                           Builtin::kInitEncodeContext, 6, true);
-    SimpleInstallFunction(isolate_, encoder, "encode",
+    SimpleInstallFunction(isolate_, mp4, "encode",
                           Builtin::kEncode, 1, true);
-    SimpleInstallFunction(isolate_, encoder, "close",
+    SimpleInstallFunction(isolate_, mp4, "close",
                           Builtin::kClose, 0, true);
-    InstallToStringTag(isolate_, encoder, "ENCODER");
+
+    InstallToStringTag(isolate_, media_codex, "MediaCodex");
   }
 
   {  // -- M a t h