Poll PAC scripts for content changes.

net/proxy/proxy_resolver_script_data.cc

Index: net/proxy/proxy_resolver_script_data.cc
diff --git a/net/proxy/proxy_resolver_script_data.cc b/net/proxy/proxy_resolver_script_data.cc
index 0314fc3560b20c359f9ae8a48cb3510bafa06947..ff96aa4c20da12faf5ed7464246762f7e67ead80 100644
--- a/net/proxy/proxy_resolver_script_data.cc
+++ b/net/proxy/proxy_resolver_script_data.cc
@@ -45,6 +45,23 @@ const GURL& ProxyResolverScriptData::url() const {
   return url_;
 }
 
+bool ProxyResolverScriptData::Equals(
+    const ProxyResolverScriptData* other) const {
+  if (type() != other->type())
+    return false;
+
+  switch (type()) {
+    case TYPE_SCRIPT_CONTENTS:
+      return utf16() == other->utf16();
+    case TYPE_SCRIPT_URL:
+      return url() == other->url();
+    case TYPE_AUTO_DETECT:
+      return true;
+  }
+
+  return false;  // Shouldn't be reached.
+}
+
 ProxyResolverScriptData::ProxyResolverScriptData(Type type,
                                                  const GURL& url,
                                                  const string16& utf16)