Add a Mojo EDK for Chrome that uses one OS pipe per message pipe.

tools/ipc_fuzzer/message_replay/replay_process.cc

Index: tools/ipc_fuzzer/message_replay/replay_process.cc
diff --git a/tools/ipc_fuzzer/message_replay/replay_process.cc b/tools/ipc_fuzzer/message_replay/replay_process.cc
index 319a4d6243be5146dc373bd438b980057486dc35..fbd6fbfe781848d69ee68c44b2b03d6552defa09 100644
--- a/tools/ipc_fuzzer/message_replay/replay_process.cc
+++ b/tools/ipc_fuzzer/message_replay/replay_process.cc
@@ -17,17 +17,27 @@
 #include "ipc/ipc_descriptors.h"
 #include "ipc/ipc_switches.h"
 #include "ipc/mojo/ipc_channel_mojo.h"
+
+#if defined(USE_CHROME_EDK)
+#include "mojo/edk/embedder/embedder.h"
+#include "mojo/edk/embedder/simple_platform_support.h"
+#else
 #include "third_party/mojo/src/mojo/edk/embedder/configuration.h"
 #include "third_party/mojo/src/mojo/edk/embedder/embedder.h"
 #include "third_party/mojo/src/mojo/edk/embedder/simple_platform_support.h"
+#endif
 
 namespace ipc_fuzzer {
 
 // TODO(morrita): content::InitializeMojo() should be used once it becomes
 // a public API. See src/content/app/mojo/mojo_init.cc
 void InitializeMojo() {
+#if defined(USE_CHROME_EDK)
+  mojo::embedder::SetMaxMessageSize(64 * 1024 * 1024);
+#else
   mojo::embedder::GetConfiguration()->max_message_num_bytes =
       64 * 1024 * 1024;
+#endif
   mojo::embedder::Init(scoped_ptr<mojo::embedder::PlatformSupport>(
       new mojo::embedder::SimplePlatformSupport()));
 }