Make spec arrays const

This CL marks all of the Spec arrays as const.

Change-Id: Ie36f670a4230fcac2cba5544b9c6e5179b0c7073
Reviewed-on: https://pdfium-review.googlesource.com/16951
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 6ff9f05..4493a47 100644
--- a/fpdfsdk/javascript/util.cpp
+++ b/fpdfsdk/javascript/util.cpp
@@ -58,7 +58,7 @@
 
 }  // namespace
 
-JSMethodSpec CJS_Util::MethodSpecs[] = {
+const JSMethodSpec CJS_Util::MethodSpecs[] = {
     {"printd", printd_static},         {"printf", printf_static},
     {"printx", printx_static},         {"scand", scand_static},
     {"byteToChar", byteToChar_static}, {0, 0}};