Only show a beforeunload dialog if a frame has had a user gesture since its load.

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

Index: android_webview/javatests/src/org/chromium/android_webview/test/WebViewModalDialogOverrideTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/WebViewModalDialogOverrideTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/WebViewModalDialogOverrideTest.java
index c65fa0404ac37c8075e912b83833bc38663d98cf..3cc957890dfc81b97a6604dcaee9abc36da5c03e 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/WebViewModalDialogOverrideTest.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/WebViewModalDialogOverrideTest.java
@@ -14,6 +14,7 @@ import android.support.test.filters.SmallTest;
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.JsPromptResultReceiver;
 import org.chromium.android_webview.JsResultReceiver;
+import org.chromium.android_webview.test.util.AwTestTouchUtils;
 import org.chromium.base.test.util.CallbackHelper;
 import org.chromium.base.test.util.Feature;
 
@@ -176,6 +177,7 @@ public class WebViewModalDialogOverrideTest extends AwTestBase {
         loadDataSync(awContents, client.getOnPageFinishedHelper(), BEFORE_UNLOAD_URL,
                 "text/html", false);
         enableJavaScriptOnUiThread(awContents);
+        AwTestTouchUtils.simulateTouchCenterOfView(view);

[boliu, 2017/04/06 21:30:13]

should write a comment explaining this?

[Avi (use Gerrit), 2017/04/06 22:29:19]

Done.

 
         // Don't wait synchronously because we don't leave the page.
         int currentCallCount = jsBeforeUnloadHelper.getCallCount();