Get rid of SandboxedProcessLauncherDelegate::PreSandbox.

content/public/browser/content_browser_client.cc

Index: content/public/browser/content_browser_client.cc
diff --git a/content/public/browser/content_browser_client.cc b/content/public/browser/content_browser_client.cc
index 8f92ff3fabacd152d8a9531ad524f1f139266dd2..599e8f3e9bfd4edc613418bed130cdf8bfa5f490 100644
--- a/content/public/browser/content_browser_client.cc
+++ b/content/public/browser/content_browser_client.cc
@@ -387,6 +387,10 @@ const wchar_t* ContentBrowserClient::GetResourceDllName() {
   return nullptr;
 }
 
+bool ContentBrowserClient::PreSpawnRenderer(sandbox::TargetPolicy* policy) {
+  return true;
+}
+
 base::string16 ContentBrowserClient::GetAppContainerSidForSandboxType(
     int sandbox_type) const {
   // Embedders should override this method and return different SIDs for each