Add three of the six extensions to PAC that Internet Explorer supports.

The following descriptions were taken from <http://blogs.msdn.com/wndp/articles/IPV6_PAC_Extensions_v0_9.aspx> 

---------------------------- 
* myIpAddressEx(): 
Returns a semi-colon delimited string containing all IP addresses for localhost (IPv6 and/or IPv4), or an empty string if unable to resolve localhost to an IP address. 

* dnsResolveEx(host): 
Returns semi-colon delimited string containing IPv6 and IPv4 addresses or an empty string if host is not resolvable. 

* isResolvableEx(): 
Returns TRUE if the host is resolvable to a IPv4 or IPv6 address, FALSE otherwise. 
---------------------------- 

These differ from the vanilla PAC functions in the following ways: 

* myIpAddressEx() returns all the addrsses for localhost (including IPv6 ones), whereas myIpAddress() only returns the first IPv4 one. 
* On failure, myIpAddress() returns "127.0.0.1" whereas on failure myIpAddressEx() returns empty string. 
* dnsResolveEx() returns a list of addresses (including IPV6 ones), whereas dnsResolve() only returns the first IPv4 address. 
* On failure, dnsResolve() returns |null|, whereas on failure dnsResolveEx() returns empty string. 

BUG=25407
TEST=ProxyResolverV8Test.DNSResolutionFailure, ProxyResolverJSBindingsTest.RestrictAddressFamily, ProxyResolverJSBindingsTest.ExFunctionsReturnList
Review URL: http://codereview.chromium.org/333006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30127 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 12 insertions, 0 deletions

diff --git a/net/proxy/proxy_resolver_js_bindings.h b/net/proxy/proxy_resolver_js_bindings.h
index 6eff69d..03ad61a 100644
--- a/net/proxy/proxy_resolver_js_bindings.h
+++ b/net/proxy/proxy_resolver_js_bindings.h
@@ -24,9 +24,21 @@ class ProxyResolverJSBindings {
   // Handler for "myIpAddress()". Returns empty string on failure.
   virtual std::string MyIpAddress() = 0;
 
+  // Handler for "myIpAddressEx()". Returns empty string on failure.
+  //
+  // This is a Microsoft extension to PAC for IPv6, see:
+  // http://blogs.msdn.com/wndp/articles/IPV6_PAC_Extensions_v0_9.aspx
+  virtual std::string MyIpAddressEx() = 0;
+
   // Handler for "dnsResolve(host)". Returns empty string on failure.
   virtual std::string DnsResolve(const std::string& host) = 0;
 
+  // Handler for "dnsResolveEx(host)". Returns empty string on failure.
+  //
+  // This is a Microsoft extension to PAC for IPv6, see:
+  // http://blogs.msdn.com/wndp/articles/IPV6_PAC_Extensions_v0_9.aspx
+  virtual std::string DnsResolveEx(const std::string& host) = 0;
+
   // Handler for when an error is encountered. |line_number| may be -1
   // if a line number is not applicable to this error.
   virtual void OnError(int line_number, const std::string& error) = 0;