Plumb network stack information about existence of cached copy

ipc/ipc_message_utils.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IPC_IPC_MESSAGE_UTILS_H_
 #define IPC_IPC_MESSAGE_UTILS_H_
 
 #include <algorithm>
 #include <map>
 #include <set>
@@ skipping 621 matching lines @@
     LogParam(p.b, l);
     l->append(", ");
     LogParam(p.c, l);
     l->append(", ");
     LogParam(p.d, l);
     l->append(", ");
     LogParam(p.e, l);
   }
 };
 
+template <class A, class B, class C, class D, class E, class F>
+struct ParamTraits< Tuple6<A, B, C, D, E, F> > {
+  typedef Tuple6<A, B, C, D, E, F> param_type;
+  static void Write(Message* m, const param_type& p) {
+    WriteParam(m, p.a);
+    WriteParam(m, p.b);
+    WriteParam(m, p.c);
+    WriteParam(m, p.d);
+    WriteParam(m, p.e);
+    WriteParam(m, p.f);
+  }
+  static bool Read(const Message* m, PickleIterator* iter, param_type* r) {
+    return (ReadParam(m, iter, &r->a) &&
+            ReadParam(m, iter, &r->b) &&
+            ReadParam(m, iter, &r->c) &&
+            ReadParam(m, iter, &r->d) &&
+            ReadParam(m, iter, &r->e) &&
+            ReadParam(m, iter, &r->f));
+  }
+  static void Log(const param_type& p, std::string* l) {
+    LogParam(p.a, l);
+    l->append(", ");
+    LogParam(p.b, l);
+    l->append(", ");
+    LogParam(p.c, l);
+    l->append(", ");
+    LogParam(p.d, l);
+    l->append(", ");
+    LogParam(p.e, l);
+    l->append(", ");
+    LogParam(p.f, l);
+  }
+};
+
 template<class P>
 struct ParamTraits<ScopedVector<P> > {
   typedef ScopedVector<P> param_type;
   static void Write(Message* m, const param_type& p) {
     WriteParam(m, static_cast<int>(p.size()));
     for (size_t i = 0; i < p.size(); i++)
       WriteParam(m, *p[i]);
   }
   static bool Read(const Message* m, PickleIterator* iter, param_type* r) {
     int size = 0;
@@ skipping 226 matching lines @@
   template<typename TA, typename TB, typename TC, typename TD, typename TE>
   static void WriteReplyParams(Message* reply, TA a, TB b, TC c, TD d, TE e) {
     ReplyParam p(a, b, c, d, e);
     WriteParam(reply, p);
   }
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_MESSAGE_UTILS_H_