Ensure CJS_Return() with error always includes a message.

Change the signature of the constructors to make it impossible to
do this otherwise.

Change-Id: I14e88d98a1128f2d599459ce9337cd6d079469fe
Reviewed-on: https://pdfium-review.googlesource.com/34531
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/fxjs/js_resources.cpp b/fxjs/js_resources.cpp
index bfffbc3714..ec20b1e9b5 100644
--- a/fxjs/js_resources.cpp
+++ b/fxjs/js_resources.cpp
@@ -49,8 +49,14 @@ WideString JSGetStringFromID(JSMessage msg) {
       return L"Permission denied.";
     case JSMessage::kBadObjectError:
       return L"Object no longer exists.";
+    case JSMessage::kObjectTypeError:
+      return L"Object is of the wrong type.";
     case JSMessage::kTooManyOccurances:
-      return L"Too many occurances";
+      return L"Too many occurances.";
+    case JSMessage::kUnknownProperty:
+      return L"Unknown property.";
+    case JSMessage::kUnknownMethod:
+      return L"Unknown method.";
   }
   NOTREACHED();
   return L"";