Adds HostResolveImpl Requests and Jobs to log.

net/base/host_resolver_impl.h

Index: net/base/host_resolver_impl.h
===================================================================
--- net/base/host_resolver_impl.h	(revision 57182)
+++ net/base/host_resolver_impl.h	(working copy)
@@ -75,16 +75,19 @@
   // used (which is SystemHostResolverProc except if overridden).
   // |max_jobs| specifies the maximum number of threads that the host resolver
   // will use. Use SetPoolConstraints() to specify finer-grain settings.
+  //
+  // |net_log| must remain valid for the life of the HostResolverImpl.
   HostResolverImpl(HostResolverProc* resolver_proc,
                    HostCache* cache,
-                   size_t max_jobs);
+                   size_t max_jobs,
+                   NetLog* net_log);
 
   // HostResolver methods:
   virtual int Resolve(const RequestInfo& info,
                       AddressList* addresses,
                       CompletionCallback* callback,
                       RequestHandle* out_req,
-                      const BoundNetLog& net_log);
+                      const BoundNetLog& source_net_log);
   virtual void CancelRequest(RequestHandle req);
   virtual void AddObserver(HostResolver::Observer* observer);
   virtual void RemoveObserver(HostResolver::Observer* observer);
@@ -154,20 +157,22 @@
                      const AddressList& addrlist);
 
   // Called when a request has just been started.
-  void OnStartRequest(const BoundNetLog& net_log,
+  void OnStartRequest(const BoundNetLog& source_net_log,
+                      const BoundNetLog& request_net_log,
                       int request_id,
                       const RequestInfo& info);
 
   // Called when a request has just completed (before its callback is run).
-  void OnFinishRequest(const BoundNetLog& net_log,
+  void OnFinishRequest(const BoundNetLog& source_net_log,
+                       const BoundNetLog& request_net_log,
                        int request_id,
                        const RequestInfo& info,
                        int net_error,
-                       int os_error,
-                       bool was_from_cache);
+                       int os_error);
 
   // Called when a request has been cancelled.
-  void OnCancelRequest(const BoundNetLog& net_log,
+  void OnCancelRequest(const BoundNetLog& source_net_log,
+                       const BoundNetLog& request_net_log,
                        int request_id,
                        const RequestInfo& info);
 
@@ -255,6 +260,8 @@
   // Any resolver flags that should be added to a request by default.
   HostResolverFlags additional_resolver_flags_;
 
+  NetLog* net_log_;
+
   DISALLOW_COPY_AND_ASSIGN(HostResolverImpl);
 };