Bug 1171931 - Refactor duplicated code using XRE_IsParent/ContentProcess. r=froydnj

caps/nsScriptSecurityManager.cpp

@@ -1285,7 +1285,7 @@ nsScriptSecurityManager::~nsScriptSecurityManager(void)
     // ContentChild might hold a reference to the domain policy,
     // and it might release it only after the security manager is
     // gone. But we can still assert this for the main process.
-    MOZ_ASSERT_IF(XRE_GetProcessType() == GeckoProcessType_Default,
+    MOZ_ASSERT_IF(XRE_IsParentProcess(),
                   !mDomainPolicy);
 }
 
@@ -1502,7 +1502,7 @@ nsScriptSecurityManager::GetDomainPolicyActive(bool *aRv)
 NS_IMETHODIMP
 nsScriptSecurityManager::ActivateDomainPolicy(nsIDomainPolicy** aRv)
 {
-    if (XRE_GetProcessType() != GeckoProcessType_Default) {
+    if (!XRE_IsParentProcess()) {
         return NS_ERROR_SERVICE_NOT_AVAILABLE;
     }