Mojo: Implement local passing of MessagePipes.

mojo/system/core_test_base.cc

Index: mojo/system/core_test_base.cc
diff --git a/mojo/system/core_test_base.cc b/mojo/system/core_test_base.cc
index 15b9f02849b35e1eaece6f34e2f1e52118edbc1c..a0b0ed4388d44ce31ffd476253a88482f3fdf130 100644
--- a/mojo/system/core_test_base.cc
+++ b/mojo/system/core_test_base.cc
@@ -64,8 +64,8 @@ class MockDispatcher : public Dispatcher {
 
   virtual MojoResult ReadMessageImplNoLock(
       void* bytes, uint32_t* num_bytes,
-      uint32_t /*max_num_dispatchers*/,
       std::vector<scoped_refptr<Dispatcher> >* /*dispatchers*/,
+      uint32_t* /*num_dispatchers*/,
       MojoReadMessageFlags /*flags*/) OVERRIDE {
     info_->IncrementReadMessageCallCount();
     lock().AssertAcquired();
@@ -94,6 +94,11 @@ class MockDispatcher : public Dispatcher {
     lock().AssertAcquired();
   }
 
+  virtual scoped_refptr<Dispatcher>
+      CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE {
+    return scoped_refptr<Dispatcher>(new MockDispatcher(info_));
+  }
+
   CoreTestBase::MockHandleInfo* const info_;
 
   DISALLOW_COPY_AND_ASSIGN(MockDispatcher);