Update mojo sdk to rev f84766d3b6420b7cf6a113d9d65d73cb5fe18d90

third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Struct.java

Index: third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Struct.java
diff --git a/third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Struct.java b/third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Struct.java
index d7369fab2e79571c99cc32d1e03efe61f006c944..16ae80198dbc8b17459e41a8ae92e9326b575a0a 100644
--- a/third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Struct.java
+++ b/third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Struct.java
@@ -85,16 +85,25 @@ public abstract class Struct {
     protected final int mEncodedBaseSize;
 
     /**
+     * The version of the struct.
+     */
+    private final int mVersion;
+
+    /**
      * Constructor.
      */
-    protected Struct(int encodedBaseSize) {
-        this.mEncodedBaseSize = encodedBaseSize;
+    protected Struct(int encodedBaseSize, int version) {
+        mEncodedBaseSize = encodedBaseSize;
+        mVersion = version;
     }
 
     /**
-     * Use the given encoder to serialized this struct.
+     * Returns the version of the struct. It is the max version of the struct in the mojom if it has
+     * been created locally, and the version of the received struct if it has been deserialized.
      */
-    protected abstract void encode(Encoder encoder);
+    public int getVersion() {
+        return mVersion;
+    }
 
     /**
      * Returns the serialization of the struct. This method can close Handles.
@@ -122,4 +131,8 @@ public abstract class Struct {
         return new ServiceMessage(encoder.getMessage(), header);
     }
 
+    /**
+     * Use the given encoder to serialize this struct.
+     */
+    protected abstract void encode(Encoder encoder);
 }