Merge to XFA: Make the vast majority of JS headers private to src/javascript.

fpdfsdk/include/javascript/IJavaScript.h

Index: fpdfsdk/include/javascript/IJavaScript.h
diff --git a/fpdfsdk/include/javascript/IJavaScript.h b/fpdfsdk/include/javascript/IJavaScript.h
index d15ffc237edc5a7c70b7b164582ca0a53d8bf27d..4d70aa15aa8c416a7476d03c0b04b6f1ce270b4a 100644
--- a/fpdfsdk/include/javascript/IJavaScript.h
+++ b/fpdfsdk/include/javascript/IJavaScript.h
@@ -134,6 +134,7 @@ class IFXJS_Context {
 
 class IFXJS_Runtime {
  public:
+  static IFXJS_Runtime* Create(CPDFDoc_Environment* pEnv);
   virtual ~IFXJS_Runtime() {}
 
   virtual IFXJS_Context* NewContext() = 0;
@@ -147,6 +148,9 @@ class IFXJS_Runtime {
                                   FXJSE_HVALUE hValue) = 0;
   virtual FX_BOOL SetHValueByName(const CFX_ByteStringC& utf8Name,
                                   FXJSE_HVALUE hValue) = 0;
+
+ protected:
+  IFXJS_Runtime() {}
 };
 
 #endif  // FPDFSDK_INCLUDE_JAVASCRIPT_IJAVASCRIPT_H_