Remove CJS_Date

This CL removes the CJS_Date class and uses the v8::Local<v8::Date>
directly.

Change-Id: I4a59b0076bc0e5dc3142b36bd7125115605d416f
Reviewed-on: https://pdfium-review.googlesource.com/16811
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/javascript/util.cpp b/fpdfsdk/javascript/util.cpp
index 26e4449..b9deda1 100644
--- a/fpdfsdk/javascript/util.cpp
+++ b/fpdfsdk/javascript/util.cpp
@@ -143,13 +143,11 @@
   if (params[1].IsEmpty() || !params[1]->IsDate())
     return CJS_Return(JSGetStringFromID(IDS_STRING_JSPRINT1));
 
-  CJS_Date jsDate(params[1].As<v8::Date>());
-  if (jsDate.ToV8Value().IsEmpty() ||
-      std::isnan(pRuntime->ToDouble(jsDate.ToV8Value()))) {
+  v8::Local<v8::Date> v8_date = params[1].As<v8::Date>();
+  if (v8_date.IsEmpty() || std::isnan(pRuntime->ToDouble(v8_date)))
     return CJS_Return(JSGetStringFromID(IDS_STRING_JSPRINT2));
-  }
 
-  double date = JS_LocalTime(pRuntime->ToDouble(jsDate.ToV8Value()));
+  double date = JS_LocalTime(pRuntime->ToDouble(v8_date));
   int year = JS_GetYearFromTime(date);
   int month = JS_GetMonthFromTime(date) + 1;  // One-based.
   int day = JS_GetDayFromTime(date);