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

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index eda764382968862dc1c968cbffb2679c979520a4..b44c560fcec1a992ae0f4d1c2368f8bf0b6a6c1e 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -148,8 +148,6 @@
 #include "third_party/WebKit/public/web/WebSurroundingText.h"
 #include "third_party/WebKit/public/web/WebUserGestureIndicator.h"
 #include "third_party/WebKit/public/web/WebView.h"
-#include "third_party/mojo/src/mojo/edk/js/core.h"
-#include "third_party/mojo/src/mojo/edk/js/support.h"
 #include "url/url_util.h"
 
 #if defined(ENABLE_PLUGINS)
@@ -199,6 +197,14 @@
 #include "content/renderer/vr/vr_dispatcher.h"
 #endif
 
+#if defined(USE_CHROME_EDK)
+#include "mojo/edk/js/core.h"
+#include "mojo/edk/js/support.h"
+#else
+#include "third_party/mojo/src/mojo/edk/js/core.h"
+#include "third_party/mojo/src/mojo/edk/js/support.h"
+#endif
+
 using blink::WebContentDecryptionModule;
 using blink::WebContextMenuData;
 using blink::WebData;
@@ -1964,6 +1970,18 @@ void RenderFrameImpl::EnsureMojoBuiltinsAreAvailable(
     v8::Isolate* isolate,
     v8::Local<v8::Context> context) {
   gin::ModuleRegistry* registry = gin::ModuleRegistry::From(context);
+#if defined(USE_CHROME_EDK)
+  if (registry->available_modules().count(mojo::edk::Core::kModuleName))
+    return;
+
+  v8::HandleScope handle_scope(isolate);
+  registry->AddBuiltinModule(
+      isolate, mojo::edk::Core::kModuleName,
+      mojo::edk::Core::GetModule(isolate));
+  registry->AddBuiltinModule(isolate,
+                             mojo::edk::Support::kModuleName,
+                             mojo::edk::Support::GetModule(isolate));
+#else  
   if (registry->available_modules().count(mojo::js::Core::kModuleName))
     return;
 
@@ -1973,6 +1991,7 @@ void RenderFrameImpl::EnsureMojoBuiltinsAreAvailable(
   registry->AddBuiltinModule(isolate,
                              mojo::js::Support::kModuleName,
                              mojo::js::Support::GetModule(isolate));
+#endif
   registry->AddBuiltinModule(
       isolate,
       ServiceRegistryJsWrapper::kModuleName,