Support variable changing in SDK interface and v8 native

plugins/org.chromium.sdk/src/org/chromium/sdk/JsVariable.java

Index: plugins/org.chromium.sdk/src/org/chromium/sdk/JsVariable.java
diff --git a/plugins/org.chromium.sdk/src/org/chromium/sdk/JsVariable.java b/plugins/org.chromium.sdk/src/org/chromium/sdk/JsVariable.java
index a291a028b89fe40ecc9f354fe8f745f7f4fdd573..341edcb799d39b216d831449c74101872f018f68 100755
--- a/plugins/org.chromium.sdk/src/org/chromium/sdk/JsVariable.java
+++ b/plugins/org.chromium.sdk/src/org/chromium/sdk/JsVariable.java
@@ -10,15 +10,6 @@ package org.chromium.sdk;
 public interface JsVariable {
 
   /**
-   * A callback to use while setting a variable value.
-   */
-  interface SetValueCallback {
-    void success();
-
-    void failure(String errorMessage);
-  }
-
-  /**
    * @return whether it is possible to read this variable
    */
   boolean isReadable();
@@ -54,13 +45,35 @@ public interface JsVariable {
    *
    * @param newValue to set
    * @param callback to report the operation result to
+   * @param syncCallback to report the end of any processing
    * @see #isMutable()
    * @throws UnsupportedOperationException if this variable is not mutable
    */
-  void setValue(String newValue, SetValueCallback callback)
+  RelayOk setValue(JsValue newValue, SetValueCallback callback, SyncCallback syncCallback)
       throws UnsupportedOperationException;
 
   /**
+   * A callback to use while setting a variable value.
+   */
+  interface SetValueCallback {
+    /**
+     * Variable is successfully updated. New value is available in {@link JsVariable#getValue()}.
+     */
+    void success();
+
+    /**
+     * Variable hasn't been updated because exception was thrown. Most probably this exception was
+     * thrown from setter function.
+     */
+    void exceptionThrown(JsValue exception);
+
+    /**
+     * Variable hasn't been updated for unknown reason.
+     */
+    void failure(Exception cause);
+  }
+
+  /**
    * Returns object property data if variable is an object property and its descriptor
    * is available.
    */