mojo: generate Proxies and Stubs for java bindings.

mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceRequest.java

Index: mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceRequest.java
diff --git a/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceRequest.java b/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceRequest.java
index b07a0ee86261eee90197b82282eb2937771b2676..67de0bdcf33627ae72eae1cd63a0514574494e08 100644
--- a/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceRequest.java
+++ b/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceRequest.java
@@ -4,12 +4,46 @@
 
 package org.chromium.mojo.bindings;
 
+import org.chromium.mojo.system.MessagePipeHandle;
+
 /**
  * Used in methods that return instances of remote objects. Allows to start using the remote object
  * immediately, while sending the handle that will be bind to the implementation.
+ * <p>
+ * InterfaceRequest are built using |Interface.Builder|.
  *
- * @param <I> the type of the remote interface.
+ * @param <P> the type of the remote interface proxy.
  */
-public final class InterfaceRequest<I extends Interface> {
+public class InterfaceRequest<P extends Interface.Proxy> implements HandleOwner<MessagePipeHandle> {

[ppi, 2014/08/21 14:47:14]

I wonder if this would be more intuitive to use if InterfaceRequest had the
interface as the type parameter, not proxy (even though the semantics is "give
me interface impl for this proxy").

The usage would look like this: InterfaceRequest<Interface>. It seems that this
would match C++ bindings, where we have:

virtual void CreateNamedObject(mojo::InterfaceRequest<NamedObject> obj) = 0;

Wdyt? Would that be feasible?

[qsr, 2014/08/22 08:11:18]

Done.

+
+    /**
+     * The handle to send away that will be connected to the implementation.
+     */
+    private final MessagePipeHandle mHandle;
+
+    /**
+     * Constructor.
+     *
+     * @param handle the handle to send away that will be connected to the implementation.
+     */
+    InterfaceRequest(MessagePipeHandle handle) {
+        mHandle = handle;
+    }
+
+    /**
+     * @see HandleOwner#passHandle()
+     */
+    @Override
+    public MessagePipeHandle passHandle() {
+        return mHandle.pass();
+    }
+
+    /**
+     * @see java.io.Closeable#close()
+     */
+    @Override
+    public void close() {
+        mHandle.close();
+    }
 
 }