Hide modal permission prompts on Android upon tab navigation/destruction

chrome/android/javatests/src/org/chromium/chrome/browser/permissions/PermissionTestCaseBase.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/permissions/PermissionTestCaseBase.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/permissions/PermissionTestCaseBase.java b/chrome/android/javatests/src/org/chromium/chrome/browser/permissions/PermissionTestCaseBase.java
index 063c362bbd4200c9de65d01841fe9c71068680a9..d398c2c5b3a59e69694127d3b8df4d286fa6fa26 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/permissions/PermissionTestCaseBase.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/permissions/PermissionTestCaseBase.java
@@ -88,11 +88,13 @@ public class PermissionTestCaseBase extends ChromeActivityTestCaseBase<ChromeAct
     /**
      * Criteria class to detect whether the permission dialog is shown.
      */
-    private static class DialogShownCriteria extends Criteria {
+    protected static class DialogShownCriteria extends Criteria {
         private AlertDialog mDialog;
+        private boolean mExpectDialog;
 
-        public DialogShownCriteria(String error) {
+        public DialogShownCriteria(String error, boolean expectDialog) {
             super(error);
+            mExpectDialog = expectDialog;
         }
 
         public AlertDialog getDialog() {
@@ -107,7 +109,7 @@ public class PermissionTestCaseBase extends ChromeActivityTestCaseBase<ChromeAct
                     public Boolean call() {
                         mDialog = PermissionDialogController.getInstance()
                                           .getCurrentDialogForTesting();
-                        return mDialog != null;
+                        return (mDialog != null) == mExpectDialog;
                     }
                 });
             } catch (ExecutionException e) {
@@ -136,6 +138,11 @@ public class PermissionTestCaseBase extends ChromeActivityTestCaseBase<ChromeAct
         super.tearDown();
     }
 
+    protected void setUpUrl(final String url) throws InterruptedException {
+        final String test_url = mTestServer.getURL(url);
+        loadUrl(test_url);
+    }
+
     /**
      * Simulates clicking a button on an AlertDialog.
      */
@@ -165,8 +172,7 @@ public class PermissionTestCaseBase extends ChromeActivityTestCaseBase<ChromeAct
     protected void runAllowTest(PermissionUpdateWaiter updateWaiter, final String url,
             String javascript, int nUpdates, boolean withGesture, boolean isDialog,
             boolean hasSwitch, boolean toggleSwitch) throws Exception {
-        final String test_url = mTestServer.getURL(url);
-        loadUrl(test_url);
+        setUpUrl(url);
 
         if (withGesture) {
             runJavaScriptCodeInCurrentTab("functionToRun = '" + javascript + "'");
@@ -176,7 +182,7 @@ public class PermissionTestCaseBase extends ChromeActivityTestCaseBase<ChromeAct
         }
 
         if (isDialog) {
-            DialogShownCriteria criteria = new DialogShownCriteria("Dialog not shown");
+            DialogShownCriteria criteria = new DialogShownCriteria("Dialog not shown", true);
             CriteriaHelper.pollUiThread(criteria);
             replyToDialogAndWaitForUpdates(
                     updateWaiter, criteria.getDialog(), nUpdates, true, hasSwitch, toggleSwitch);