Shut down proxy resolver utility processes when no longer needed.

net/proxy/in_process_mojo_proxy_resolver_factory.h

Index: net/proxy/in_process_mojo_proxy_resolver_factory.h
diff --git a/net/proxy/in_process_mojo_proxy_resolver_factory.h b/net/proxy/in_process_mojo_proxy_resolver_factory.h
index 232d2376e6ac478592b1af1a0bfb66507f62fd00..8794614f702ec855ca63b5deffdc56101fd1c2d4 100644
--- a/net/proxy/in_process_mojo_proxy_resolver_factory.h
+++ b/net/proxy/in_process_mojo_proxy_resolver_factory.h
@@ -6,7 +6,7 @@
 #define NET_PROXY_IN_PROCESS_MOJO_PROXY_RESOLVER_FACTORY_H_
 
 #include "base/macros.h"
-#include "net/interfaces/proxy_resolver_service.mojom.h"
+#include "net/proxy/mojo_proxy_resolver_factory.h"
 
 template <typename T>
 struct DefaultSingletonTraits;
@@ -16,13 +16,12 @@ namespace net {
 // Factory to connect to an in-process Mojo proxy resolver service.
 // NOTE: This is intended to be temporary for debugging purposes and will be
 // removed when we're confident with the out-of-process implementation.
-class InProcessMojoProxyResolverFactory
-    : public interfaces::ProxyResolverFactory {
+class InProcessMojoProxyResolverFactory : public MojoProxyResolverFactory {
  public:
   static InProcessMojoProxyResolverFactory* GetInstance();
 
-  // Overridden from interfaces::ProxyResolverFactory:
-  void CreateResolver(
+  // Overridden from MojoProxyResolverFactory:
+  scoped_ptr<base::ScopedClosureRunner> CreateResolver(
       const mojo::String& pac_script,
       mojo::InterfaceRequest<interfaces::ProxyResolver> req,
       interfaces::HostResolverPtr host_resolver,