Move registration of Java mojo interfaces to the new InterfaceRegistrar.

services/shell/public/java/src/org/chromium/services/shell/InterfaceRegistry.java

Index: services/shell/public/java/src/org/chromium/services/shell/InterfaceRegistry.java
diff --git a/services/shell/public/java/src/org/chromium/services/shell/InterfaceRegistry.java b/services/shell/public/java/src/org/chromium/services/shell/InterfaceRegistry.java
index 90b7d904866a22e81d8ca4fb23df275d177e40ce..6891f330cf006b714fd14c6a6353d0e49e7b047d 100644
--- a/services/shell/public/java/src/org/chromium/services/shell/InterfaceRegistry.java
+++ b/services/shell/public/java/src/org/chromium/services/shell/InterfaceRegistry.java
@@ -19,7 +19,7 @@ import java.util.Map;
  * implement an InterfaceFactory that creates instances of your implementation
  * and register that on the registry with a Manager for the interface like this:
  *
- *   registry.addInterface(factory, InterfaceType.MANAGER);
+ *   registry.addInterface(InterfaceType.MANAGER, factory);
  */
 public class InterfaceRegistry implements InterfaceProvider {
     private final Map<String, InterfaceBinder> mBinders = new HashMap<String, InterfaceBinder>();
@@ -67,7 +67,12 @@ public class InterfaceRegistry implements InterfaceProvider {
         }
 
         public void bindToMessagePipe(MessagePipeHandle pipe) {
-            mManager.bind(mFactory.createImpl(), pipe);
+            I impl = mFactory.createImpl();
+            if (impl == null) {
+                pipe.close();
+                return;
+            }
+            mManager.bind(impl, pipe);
         }
     }
 }