Bug 1356826: Part 4 - Add Cu.isInAutomation and Cu.crashIfNotInAutomation helpers. r=bholley

MozReview-Commit-ID: ADqVqF2XraG

--HG--
extra : rebase_source : ea5df06eb9162f9f8c5816f49fb44d9f41947126

js/xpconnect/idl/xpccomponents.idl

@@ -529,6 +529,12 @@ interface nsIXPCComponents_Utils : nsISupports
     [implicit_jscontext]
     attribute boolean ion;
 
+    // Returns true if we're running in automation and certain security
+    // restrictions can be eased.
+    readonly attribute boolean isInAutomation;
+
+    void crashIfNotInAutomation();
+
     [implicit_jscontext]
     void setGCZeal(in long zeal);
 

js/xpconnect/src/XPCComponents.cpp

@@ -2916,7 +2916,7 @@ nsXPCComponents_Utils::SetWantXrays(HandleValue vscope, JSContext* cx)
 NS_IMETHODIMP
 nsXPCComponents_Utils::ForcePermissiveCOWs(JSContext* cx)
 {
-    CrashIfNotInAutomation();
+    xpc::CrashIfNotInAutomation();
     CompartmentPrivate::Get(CurrentGlobalOrNull(cx))->forcePermissiveCOWs = true;
     return NS_OK;
 }
@@ -2927,7 +2927,7 @@ nsXPCComponents_Utils::ForcePrivilegedComponentsForScope(HandleValue vscope,
 {
     if (!vscope.isObject())
         return NS_ERROR_INVALID_ARG;
-    CrashIfNotInAutomation();
+    xpc::CrashIfNotInAutomation();
     JSObject* scopeObj = js::UncheckedUnwrap(&vscope.toObject());
     XPCWrappedNativeScope* scope = ObjectScope(scopeObj);
     scope->ForcePrivilegedComponents();
@@ -3012,6 +3012,22 @@ nsXPCComponents_Utils::SetGCZeal(int32_t aValue, JSContext* cx)
     return NS_OK;
 }
 
+NS_IMETHODIMP
+nsXPCComponents_Utils::GetIsInAutomation(bool* aResult)
+{
+    NS_ENSURE_ARG_POINTER(aResult);
+
+    *aResult = xpc::IsInAutomation();
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXPCComponents_Utils::CrashIfNotInAutomation()
+{
+    xpc::CrashIfNotInAutomation();
+    return NS_OK;
+}
+
 NS_IMETHODIMP
 nsXPCComponents_Utils::NukeSandbox(HandleValue obj, JSContext* cx)
 {