Prevent guest views from issuing a search for empty text.

extensions/test/data/web_view/apitest/main.js

 // Copyright 2014 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.
 
 var embedder = {};
 
 // TODO(lfg) Move these functions to a common js.
 embedder.setUp_ = function(config) {
   if (!config || !config.testServer) {
     return;
@@ skipping 721 matching lines @@
       'Dog dog dog Dog dog dogcatDog dogDogdog<br>' +
       'Dog dog dog Dog dog dogcatDog dogDogdog<br>' +
       'Dog dog dog Dog dog dogcatDog dogDogdog<br>' +
       'Dog dog dog Dog dog dogcatDog dogDogdog<br>' +
       'Dog dog dog Dog dog dogcatDog dogDogdog<br>' +
       'Dog dog dog Dog dog dogcatDog dogDogdog<br><br>' +
       '<a href="about:blank">Click here!</a>';
 
   var loadstopListener2 = function(e) {
     embedder.test.assertEq(webview.src, "about:blank");
-    embedder.test.succeed();
+    // Test find results when looking for nothing.
+    webview.find("", {}, function(results) {
+      embedder.test.assertEq(results.numberOfMatches, 0);
+      embedder.test.assertEq(results.activeMatchOrdinal, 0);
+      embedder.test.assertEq(results.selectionRect.left, 0);
+      embedder.test.assertEq(results.selectionRect.top, 0);
+      embedder.test.assertEq(results.selectionRect.width, 0);
+      embedder.test.assertEq(results.selectionRect.height, 0);
+
+      embedder.test.succeed();
+    });
   }
 
   var loadstopListener1 = function(e) {
     // Test find results.
     webview.find("dog", {}, function(results) {
-      callbackTest = true;
       embedder.test.assertEq(results.numberOfMatches, 100);
       embedder.test.assertTrue(results.selectionRect.width > 0);
       embedder.test.assertTrue(results.selectionRect.height > 0);
 
       // Test finding next active matches.
       webview.find("dog");
       webview.find("dog");
       webview.find("dog");
       webview.find("dog");
       webview.find("dog", {}, function(results) {
@@ skipping 986 matching lines @@
   'testWebRequestAPIExistence': testWebRequestAPIExistence,
   'testWebRequestAPIGoogleProperty': testWebRequestAPIGoogleProperty
 };
 
 onload = function() {
   chrome.test.getConfig(function(config) {
     embedder.setUp_(config);
     chrome.test.sendMessage('LAUNCHED');
   });
 };