Remove ProxyResolver::(Cancel)SetPacScript and LegacyProxyResolverFactory.

net/proxy/proxy_resolver.h

Index: net/proxy/proxy_resolver.h
diff --git a/net/proxy/proxy_resolver.h b/net/proxy/proxy_resolver.h
index bae5186e4457e1d732f54ccae26ba6248a969b4f..11df64fcc6a1e565de86d3c2e0b1cb262368c529 100644
--- a/net/proxy/proxy_resolver.h
+++ b/net/proxy/proxy_resolver.h
@@ -32,9 +32,7 @@ class NET_EXPORT_PRIVATE ProxyResolver {
   using LoadStateChangedCallback =
       base::Callback<void(RequestHandle, LoadState)>;
 
-  // See |expects_pac_bytes()| for the meaning of |expects_pac_bytes|.
-  explicit ProxyResolver(bool expects_pac_bytes)
-      : expects_pac_bytes_(expects_pac_bytes) {}
+  ProxyResolver() {}
 
   virtual ~ProxyResolver() {}
 
@@ -56,24 +54,7 @@ class NET_EXPORT_PRIVATE ProxyResolver {
   // Gets the LoadState for |request|.
   virtual LoadState GetLoadState(RequestHandle request) const = 0;
 
-  // The PAC script backend can be specified to the ProxyResolver either via
-  // URL, or via the javascript text itself.  If |expects_pac_bytes| is true,
-  // then the ProxyResolverScriptData passed to SetPacScript() should
-  // contain the actual script bytes rather than just the URL.
-  bool expects_pac_bytes() const { return expects_pac_bytes_; }
-
-  virtual void CancelSetPacScript() = 0;
-
-  // Called to set the PAC script backend to use.
-  // Returns ERR_IO_PENDING in the case of asynchronous completion, and notifies
-  // the result through |callback|.
-  virtual int SetPacScript(
-      const scoped_refptr<ProxyResolverScriptData>& pac_script,
-      const CompletionCallback& callback) = 0;
-
  private:
-  const bool expects_pac_bytes_;
-
   DISALLOW_COPY_AND_ASSIGN(ProxyResolver);
 };