Convert string16 to base::string16 in content.

content/renderer/websharedworker_proxy.cc

Index: content/renderer/websharedworker_proxy.cc
diff --git a/content/renderer/websharedworker_proxy.cc b/content/renderer/websharedworker_proxy.cc
index ad35f02a6eed93d2b2dca01968d83485dc275ded..9b5edc5d4a39bb90642e0561e0099d59d6f7265d 100644
--- a/content/renderer/websharedworker_proxy.cc
+++ b/content/renderer/websharedworker_proxy.cc
@@ -51,10 +51,10 @@ void WebSharedWorkerProxy::Disconnect() {
 void WebSharedWorkerProxy::CreateWorkerContext(
     const GURL& script_url,
     bool is_shared,
-    const string16& name,
-    const string16& user_agent,
-    const string16& source_code,
-    const string16& content_security_policy,
+    const base::string16& name,
+    const base::string16& user_agent,
+    const base::string16& source_code,
+    const base::string16& content_security_policy,
     blink::WebContentSecurityPolicyType policy_type,
     int pending_route_id,
     int64 script_resource_appcache_id) {