Get render_process_host to build on Linux by butchering a bunch of files.

chrome/common/ipc_message_utils.h

 // Copyright (c) 2006-2008 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 CHROME_COMMON_IPC_MESSAGE_UTILS_H_
 #define CHROME_COMMON_IPC_MESSAGE_UTILS_H_
 
 #include <string>
 #include <vector>
 #include <map>
@@ skipping 190 matching lines @@
     m->WriteInt64(static_cast<int64>(p));
   }
   static bool Read(const Message* m, void** iter, param_type* r) {
     return m->ReadInt64(iter, reinterpret_cast<int64*>(r));
   }
   static void Log(const param_type& p, std::wstring* l) {
     l->append(StringPrintf(L"%I64u", p));
   }
 };
 
+#if !defined(OS_WIN)
+// TODO(port): why do we need this?
+template <>
+struct ParamTraits<void*> {
+  typedef void* param_type;
+  static void Write(Message* m, const param_type& p) {
+    COMPILE_ASSERT(sizeof(long) == sizeof(void*),
+                   assumes_pointers_and_longs_same_size);
+    m->WriteLong(bit_cast<long>(p));
+  }
+  static bool Read(const Message* m, void** iter, param_type* r) {
+    return m->ReadLong(iter, reinterpret_cast<long*>(r));
+  }
+  static void Log(const param_type& p, std::wstring* l) {
+    l->append(StringPrintf(L"%x", p));
+  }
+};
+#endif
+
 template <>
 struct ParamTraits<double> {
   typedef double param_type;
   static void Write(Message* m, const param_type& p) {
     m->WriteData(reinterpret_cast<const char*>(&p), sizeof(param_type));
   }
   static bool Read(const Message* m, void** iter, param_type* r) {
     const char *data;
     int data_size = 0;
     bool result = m->ReadData(iter, &data, &data_size);
@@ skipping 1054 matching lines @@
     l->append(L"<FindInPageRequest>");
   }
 };
 
 //-----------------------------------------------------------------------------
 
 }  // namespace IPC
 
 #endif  // CHROME_COMMON_IPC_MESSAGE_UTILS_H_