Merge to XFA: Ensure functions in FXJS_V8 are prefixed by FXJS_.

Manual edits:
  fpdfsdk/include/javascript/JS_Define.h
  fpdfsdk/src/fpdfxfa/fpdfxfa_app.cpp
  fpdfsdk/src/javascript/Document.cpp
  fpdfsdk/src/javascript/JS_Runtime.cpp
  fpdfsdk/src/jsapi/fxjs_v8.cpp

(cherry picked from commit 506df426d5d64d68e9dc27ffebcf56f6c6a1bccf)
Original Review URL: https://codereview.chromium.org/1347833002 .

(cherry picked from commit 455019ca48f60bd285e043986471f51f17c69a0d)
Original Review URL: https://codereview.chromium.org/1349783003 .

(cherry picked from commit 1af240cc45480520b447be767686e73a29c48f9e)
Original Review URL: https://codereview.chromium.org/1348693003 .

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1356563003 .
diff --git a/fpdfsdk/src/javascript/Consts.cpp b/fpdfsdk/src/javascript/Consts.cpp
index 9574c44..acb4966 100644
--- a/fpdfsdk/src/javascript/Consts.cpp
+++ b/fpdfsdk/src/javascript/Consts.cpp
@@ -132,7 +132,8 @@
 static void DefineGlobalConstString(v8::Isolate* pIsolate,
                                     const wchar_t* pConstName,
                                     const wchar_t* pValue) {
-  JS_DefineGlobalConst(pIsolate, pConstName, JS_NewString(pIsolate, pValue));
+  FXJS_DefineGlobalConst(pIsolate, pConstName,
+                         FXJS_NewString(pIsolate, pValue));
 }
 
 void CJS_GlobalConsts::DefineJSObjects(v8::Isolate* pIsolate) {
@@ -176,7 +177,7 @@
   }
   CJS_PropValue prop(pIsolate);
   prop << array;
-  JS_DefineGlobalConst(pIsolate, sConstName, prop.ToV8Value());
+  FXJS_DefineGlobalConst(pIsolate, sConstName, prop.ToV8Value());
 }
 
 void CJS_GlobalArrays::DefineJSObjects(v8::Isolate* pIsolate) {