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

mojo/runner/context.cc

Index: mojo/runner/context.cc
diff --git a/mojo/runner/context.cc b/mojo/runner/context.cc
index b6d78e333d17a9def89f69a54854344420758ecb..b6cd6ca905f8d8fc6940e038213530c153ea6bc2 100644
--- a/mojo/runner/context.cc
+++ b/mojo/runner/context.cc
@@ -27,8 +27,6 @@
 #include "mojo/application/public/cpp/application_impl.h"
 #include "mojo/common/trace_controller_impl.h"
 #include "mojo/common/tracing_impl.h"
-#include "mojo/edk/embedder/embedder.h"
-#include "mojo/edk/embedder/simple_platform_support.h"
 #include "mojo/package_manager/package_manager_impl.h"
 #include "mojo/runner/in_process_native_runner.h"
 #include "mojo/runner/out_of_process_native_runner.h"
@@ -42,6 +40,14 @@
 #include "mojo/util/filename_util.h"
 #include "url/gurl.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/embedder.h"
+#include "third_party/mojo/src/mojo/edk/embedder/simple_platform_support.h"
+#endif
+
 namespace mojo {
 namespace runner {
 namespace {
@@ -50,7 +56,11 @@ namespace {
 class Setup {
  public:
   Setup() {
+#if defined(USE_CHROME_EDK)
+    edk::Init(make_scoped_ptr(new edk::SimplePlatformSupport()));
+#else
     embedder::Init(make_scoped_ptr(new embedder::SimplePlatformSupport()));
+#endif
   }
 
   ~Setup() {}
@@ -185,10 +195,16 @@ bool Context::Init() {
   task_runners_.reset(
       new TaskRunners(base::MessageLoop::current()->task_runner()));
 
+#if defined(USE_CHROME_EDK)
+  edk::InitIPCSupport(
+      task_runners_->shell_runner(), this,  task_runners_->io_runner(),
+      edk::ScopedPlatformHandle());
+#else
   // TODO(vtl): This should be MASTER, not NONE.
   embedder::InitIPCSupport(
       embedder::ProcessType::NONE, task_runners_->shell_runner(), this,
       task_runners_->io_runner(), embedder::ScopedPlatformHandle());
+#endif
 
   package_manager_ = new package_manager::PackageManagerImpl(shell_file_root_);
   InitContentHandlers(package_manager_, command_line);
@@ -244,7 +260,11 @@ void Context::Shutdown() {
   TRACE_EVENT0("mojo_shell", "Context::Shutdown");
   DCHECK_EQ(base::MessageLoop::current()->task_runner(),
             task_runners_->shell_runner());
+#if defined(USE_CHROME_EDK)
+  edk::ShutdownIPCSupport();
+#else
   embedder::ShutdownIPCSupport();
+#endif
   // We'll quit when we get OnShutdownComplete().
   base::MessageLoop::current()->Run();
 }