Upstream chromium side of modal dialogs for webview.

android_webview/java/src/org/chromium/android_webview/JsResultHandler.java

Index: android_webview/java/src/org/chromium/android_webview/JsResultHandler.java
diff --git a/android_webview/java/src/org/chromium/android_webview/JsResultHandler.java b/android_webview/java/src/org/chromium/android_webview/JsResultHandler.java
new file mode 100644
index 0000000000000000000000000000000000000000..372032401ad0ec6a00582f776c29b84976ce3ce2
--- /dev/null
+++ b/android_webview/java/src/org/chromium/android_webview/JsResultHandler.java
@@ -0,0 +1,39 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.android_webview;
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+
+@JNINamespace("android_webview")
+public class JsResultHandler implements JsResultReceiver, JsPromptResultReceiver {
+    private int mNativeDialogPointer;
+
+    @CalledByNative
+    public static JsResultHandler create(int nativeDialogPointer) {
+        return new JsResultHandler(nativeDialogPointer);
+    }
+
+    private JsResultHandler(int nativeDialogPointer) {
+        mNativeDialogPointer = nativeDialogPointer;
+    }
+
+    @Override
+    public void confirm() {
+        confirm(null);
+    }
+
+    @Override
+    public void confirm(String promptResult) {
+        nativeConfirmJsResult(mNativeDialogPointer, promptResult);
+    }
+
+    @Override
+    public void cancel() {
+        nativeCancelJsResult(mNativeDialogPointer);
+    }
+
+    private native void nativeConfirmJsResult(int dialogPointer, String promptResult);
+    private native void nativeCancelJsResult(int dialogPointer);
+}