Fix a bunch of sign mismatch warnings.

fpdfsdk/include/javascript/JS_Define.h

Index: fpdfsdk/include/javascript/JS_Define.h
diff --git a/fpdfsdk/include/javascript/JS_Define.h b/fpdfsdk/include/javascript/JS_Define.h
index 04f5eceef5cf298b2086619094e29aacd5ddbcdb..0b5469070070f3d7a2eb575b502114dc836e8f4d 100644
--- a/fpdfsdk/include/javascript/JS_Define.h
+++ b/fpdfsdk/include/javascript/JS_Define.h
@@ -226,12 +226,12 @@ void JSMethod(const char* method_name_string,
                                       FXJSOBJTYPE eObjType) {                \
     int nObjDefnID = FXJS_DefineObj(pIsolate, js_class_name::m_pClassName,   \
                                     eObjType, JSConstructor, JSDestructor);  \
-    for (int i = 0; i < FX_ArraySize(JS_Class_Properties) - 1; ++i) {        \
+    for (size_t i = 0; i < FX_ArraySize(JS_Class_Properties) - 1; ++i) {     \
       FXJS_DefineObjProperty(                                                \
           pIsolate, nObjDefnID, JS_Class_Properties[i].pName,                \
           JS_Class_Properties[i].pPropGet, JS_Class_Properties[i].pPropPut); \
     }                                                                        \
-    for (int i = 0; i < FX_ArraySize(JS_Class_Methods) - 1; ++i) {           \
+    for (size_t i = 0; i < FX_ArraySize(JS_Class_Methods) - 1; ++i) {        \
       FXJS_DefineObjMethod(pIsolate, nObjDefnID, JS_Class_Methods[i].pName,  \
                            JS_Class_Methods[i].pMethodCall);                 \
     }                                                                        \
@@ -254,7 +254,7 @@ void JSMethod(const char* method_name_string,
                                       FXJSOBJTYPE eObjType) {              \
     int nObjDefnID = FXJS_DefineObj(pIsolate, js_class_name::m_pClassName, \
                                     eObjType, NULL, NULL);                 \
-    for (int i = 0; i < FX_ArraySize(JS_Class_Consts) - 1; ++i) {          \
+    for (size_t i = 0; i < FX_ArraySize(JS_Class_Consts) - 1; ++i) {       \
       FXJS_DefineObjConst(                                                 \
           pIsolate, nObjDefnID, JS_Class_Consts[i].pName,                  \
           JS_Class_Consts[i].t == 0                                        \
@@ -426,13 +426,13 @@ void JSSpecialPropDel(const char* class_name,
                                       FXJSOBJTYPE eObjType) {                  \
     int nObjDefnID = FXJS_DefineObj(pIsolate, js_class_name::m_pClassName,     \
                                     eObjType, JSConstructor, JSDestructor);    \
-    for (int i = 0; i < FX_ArraySize(JS_Class_Properties) - 1; ++i) {          \
+    for (size_t i = 0; i < FX_ArraySize(JS_Class_Properties) - 1; ++i) {       \
       FXJS_DefineObjProperty(                                                  \
           pIsolate, nObjDefnID, JS_Class_Properties[i].pName,                  \
           JS_Class_Properties[i].pPropGet, JS_Class_Properties[i].pPropPut);   \
     }                                                                          \
                                                                                \
-    for (int i = 0; i < FX_ArraySize(JS_Class_Methods) - 1; ++i) {             \
+    for (size_t i = 0; i < FX_ArraySize(JS_Class_Methods) - 1; ++i) {          \
       FXJS_DefineObjMethod(pIsolate, nObjDefnID, JS_Class_Methods[i].pName,    \
                            JS_Class_Methods[i].pMethodCall);                   \
     }                                                                          \
@@ -493,7 +493,7 @@ void JSGlobalFunc(const char* func_name_string,
 
 #define IMPLEMENT_JS_STATIC_GLOBAL_FUN(js_class_name)                        \
   void js_class_name::DefineJSObjects(v8::Isolate* pIsolate) {               \
-    for (int i = 0; i < FX_ArraySize(global_methods) - 1; ++i) {             \
+    for (size_t i = 0; i < FX_ArraySize(global_methods) - 1; ++i) {          \
       FXJS_DefineGlobalMethod(pIsolate,                                      \
                               js_class_name::global_methods[i].pName,        \
                               js_class_name::global_methods[i].pMethodCall); \