Refactor JS method parameters and return values.

This CL removes the out parameters from the JS methods and changes the
return from a |bool| to a |CJS_Return| value. The return value holds the
returned v8 object, error string and a status code.

Change-Id: I82488ff0d916475d7e3c8e51ed868639806181c9
Reviewed-on: https://pdfium-review.googlesource.com/16751
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
diff --git a/fpdfsdk/javascript/report.cpp b/fpdfsdk/javascript/report.cpp
index adbe7d8..043a68e 100644
--- a/fpdfsdk/javascript/report.cpp
+++ b/fpdfsdk/javascript/report.cpp
@@ -26,18 +26,14 @@
 
 Report::~Report() {}
 
-bool Report::writeText(CJS_Runtime* pRuntime,
-                       const std::vector<v8::Local<v8::Value>>& params,
-                       CJS_Value& vRet,
-                       WideString& sError) {
+CJS_Return Report::writeText(CJS_Runtime* pRuntime,
+                             const std::vector<v8::Local<v8::Value>>& params) {
   // Unsafe, not supported.
-  return true;
+  return CJS_Return(true);
 }
 
-bool Report::save(CJS_Runtime* pRuntime,
-                  const std::vector<v8::Local<v8::Value>>& params,
-                  CJS_Value& vRet,
-                  WideString& sError) {
+CJS_Return Report::save(CJS_Runtime* pRuntime,
+                        const std::vector<v8::Local<v8::Value>>& params) {
   // Unsafe, not supported.
-  return true;
+  return CJS_Return(true);
 }