From c4dedf32b1f5c71740df5be2a9b1446a01df304c Mon Sep 17 00:00:00 2001
From: jochen <jochen@chromium.org>
Date: Wed, 6 Jul 2016 05:26:23 -0700
Subject: Remove prototypes from v8 functions that aren't constructors

BUG=chromium:625823
R=haraken@chromium.org,thestig@chromium.org

Review-Url: https://codereview.chromium.org/2123153002
---
 fxjse/class.cpp | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

(limited to 'fxjse')

diff --git a/fxjse/class.cpp b/fxjse/class.cpp
index 1dba7f073f..a4ed0916bd 100644
--- a/fxjse/class.cpp
+++ b/fxjse/class.cpp
@@ -104,6 +104,9 @@ static void FXJSE_V8SetterCallback_Wrapper(
 
 static void FXJSE_V8ConstructorCallback_Wrapper(
     const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (!info.IsConstructCall()) {
+    return;
+  }
   const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition =
       static_cast<FXJSE_CLASS_DESCRIPTOR*>(
           info.Data().As<v8::External>()->Value());
@@ -228,13 +231,14 @@ CFXJSE_Class* CFXJSE_Class::Create(
   }
   if (lpClassDefinition->methNum) {
     for (int32_t i = 0; i < lpClassDefinition->methNum; i++) {
+      v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New(
+          pIsolate, FXJSE_V8FunctionCallback_Wrapper,
+          v8::External::New(pIsolate, const_cast<FXJSE_FUNCTION_DESCRIPTOR*>(
+                                          lpClassDefinition->methods + i)));
+      fun->RemovePrototype();
       hObjectTemplate->Set(
           v8::String::NewFromUtf8(pIsolate, lpClassDefinition->methods[i].name),
-          v8::FunctionTemplate::New(
-              pIsolate, FXJSE_V8FunctionCallback_Wrapper,
-              v8::External::New(pIsolate,
-                                const_cast<FXJSE_FUNCTION_DESCRIPTOR*>(
-                                    lpClassDefinition->methods + i))),
+          fun,
           static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
     }
   }
@@ -260,12 +264,12 @@ CFXJSE_Class* CFXJSE_Class::Create(
     }
   }
   if (bIsJSGlobal) {
-    hObjectTemplate->Set(
-        v8::String::NewFromUtf8(pIsolate, "toString"),
-        v8::FunctionTemplate::New(
-            pIsolate, FXJSE_Context_GlobalObjToString,
-            v8::External::New(pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>(
-                                            lpClassDefinition))));
+    v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New(
+        pIsolate, FXJSE_Context_GlobalObjToString,
+        v8::External::New(
+            pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClassDefinition)));
+    fun->RemovePrototype();
+    hObjectTemplate->Set(v8::String::NewFromUtf8(pIsolate, "toString"), fun);
   }
   pClass->m_hTemplate.Reset(lpContext->m_pIsolate, hFunctionTemplate);
   lpContext->m_rgClasses.push_back(std::unique_ptr<CFXJSE_Class>(pClass));
-- 
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