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

content/app/mojo/mojo_init.cc

Index: content/app/mojo/mojo_init.cc
diff --git a/content/app/mojo/mojo_init.cc b/content/app/mojo/mojo_init.cc
index bf92f64886f4d65ca69bf30a0982ec4282d6e36f..d7c99d44e9a8fe6b8c2bb0b4e57a78131a27dd2d 100644
--- a/content/app/mojo/mojo_init.cc
+++ b/content/app/mojo/mojo_init.cc
@@ -7,9 +7,15 @@
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "ipc/ipc_channel.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 content {
 
@@ -18,8 +24,12 @@ namespace {
 class MojoInitializer {
  public:
   MojoInitializer() {
+#if defined(USE_CHROME_EDK)
+  mojo::embedder::SetMaxMessageSize(IPC::Channel::kMaximumMessageSize);
+#else
     mojo::embedder::GetConfiguration()->max_message_num_bytes =
         IPC::Channel::kMaximumMessageSize;
+#endif
     mojo::embedder::Init(scoped_ptr<mojo::embedder::PlatformSupport>(
         new mojo::embedder::SimplePlatformSupport()));
   }