[draft] flush visual state prototype

android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
index fbba821a7ced05b9885da13e305a8441deac84e9..390959f5ef34e3dfa87e98640d1bcd9e7ff3bdc3 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
@@ -562,4 +562,31 @@ public class AwContentsTest extends AwTestBase {
         loadUrlSync(awContents, mContentsClient.getOnPageFinishedHelper(), pageUrl);
         assertEquals(onSslErrorCallCount + 1, onReceivedSslErrorHelper.getCallCount());
     }
+
+    @Feature({"AndroidWebView"})
+    @SmallTest
+    public void testFlushVisualState() throws Throwable {
+        AwTestContainerView testContainer =
+                createAwTestContainerViewOnMainSync(mContentsClient);
+        final AwContents awContents = testContainer.getAwContents();
+        loadUrlSync(awContents,
+                mContentsClient.getOnPageFinishedHelper(), CommonResources.ABOUT_HTML);
+        final CallbackHelper ch = new CallbackHelper();
+        final int chCount = ch.getCallCount();
+        runTestOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                awContents.flushVisualState(new AwContents.VisualStateFlushCallback() {
+                    @Override
+                    public void onComplete() {
+                        ch.notifyCalled();
+                    }
+
+                    @Override
+                    public void onFailure(int reason) {}
+                });
+            }
+        });
+        ch.waitForCallback(chCount);
+    }
 }