Web UI: Replace ==/!= with ===/!== in chrome/test/data/webui

This is the remainder of
https://chromium-review.googlesource.com/c/chromium/src/+/2003795
by dbeam@ generated using the same command line (updated several
sub folders in previous CLs, to reduce the final size).

Bug: 720034
Change-Id: Ia787fcbc1f1f493f1769790db6cd9e652ccd5cd7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2196829Reviewed-by: John Lee <johntlee@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#768030}

chrome/test/data/webui/.eslintrc.js

@@ -8,5 +8,6 @@ module.exports = {
     'no-restricted-properties': 'off',
     'no-var': 'off',
     'prefer-const': 'off',
+    'eqeqeq': ['error', 'always', {'null': 'ignore'}],
   },
 };

chrome/test/data/webui/a11y/accessibility_test.js

@@ -87,7 +87,7 @@ AccessibilityTest.runAudit_ = function(testDef) {
  * @return {!Array<axe.Result>} List of filtered violations.
  */
 AccessibilityTest.filterViolations_ = function(violations, filter) {
-  if (Object.keys(filter).length == 0) {
+  if (Object.keys(filter).length === 0) {
     return violations;
   }
 

chrome/test/data/webui/about_invalidations_browsertest.js

@@ -31,7 +31,7 @@ TEST_F('InvalidationsWebUITest', 'testRegisteringNewInvalidation', function() {
   var isContained =
       invalidationsLog.value.indexOf(
           'Received Invalidation with type ' +
-          '"EXTENSIONS" version "Unknown" with payload "undefined"') != -1;
+          '"EXTENSIONS" version "Unknown" with payload "undefined"') !== -1;
   expectTrue(isContained, 'Actual log is:' + invalidationsLog.value);
 
 });
@@ -46,17 +46,17 @@ TEST_F('InvalidationsWebUITest', 'testChangingInvalidationsState', function() {
 
   chrome.invalidations.updateInvalidatorState(newState);
   var isContainedState =
-      invalidationsState.textContent.indexOf('INVALIDATIONS_ENABLED') != -1;
+      invalidationsState.textContent.indexOf('INVALIDATIONS_ENABLED') !== -1;
   expectTrue(isContainedState, 'could not change the invalidations text');
 
   invalidationsLog.value = '';
   chrome.invalidations.updateInvalidatorState(newNewState);
   var isContainedState2 = invalidationsState.textContent.indexOf(
-                              'TRANSIENT_INVALIDATION_ERROR') != -1;
+                              'TRANSIENT_INVALIDATION_ERROR') !== -1;
   expectTrue(isContainedState2, 'could not change the invalidations text');
   var isContainedLog = invalidationsLog.value.indexOf(
                            'Invalidations service state changed to ' +
-                           '"TRANSIENT_INVALIDATION_ERROR"') != -1;
+                           '"TRANSIENT_INVALIDATION_ERROR"') !== -1;
   expectTrue(isContainedLog, 'Actual log is:' + invalidationsLog.value);
 });
 
@@ -83,9 +83,9 @@ TEST_F('InvalidationsWebUITest', 'testRegisteringNewIds', function() {
     var pattern2Test = true;
     for (var cell = 0; cell < oidTable.rows[row].cells.length; cell++) {
       pattern1Test = pattern1Test &&
-          (pattern1[cell] == oidTable.rows[row].cells[cell].textContent);
+          (pattern1[cell] === oidTable.rows[row].cells[cell].textContent);
       pattern2Test = pattern2Test &&
-          (pattern2[cell] == oidTable.rows[row].cells[cell].textContent);
+          (pattern2[cell] === oidTable.rows[row].cells[cell].textContent);
     }
     if (pattern1Test) {
       expectEquals('greyed', oidTable.rows[row].className);

chrome/test/data/webui/bluetooth_internals_browsertest.js

@@ -758,7 +758,7 @@ TEST_F('BluetoothInternalsTest', 'Startup_BluetoothInternals', function() {
           value = value[part];
         }
 
-        if (propName == 'isGattConnected') {
+        if (propName === 'isGattConnected') {
           value = value ? 'Connected' : 'Not Connected';
         }
 

chrome/test/data/webui/chromeos/fake_network_config_mojom.js

@@ -139,7 +139,7 @@ class FakeNetworkConfig {
 
     const networkState = OncMojo.managedPropertiesToNetworkState(network);
     const idx = this.networkStates_.findIndex(state => {
-      return state.guid == network.guid;
+      return state.guid === network.guid;
     });
     if (idx >= 0) {
       this.networkStates_[idx] = networkState;
@@ -154,7 +154,7 @@ class FakeNetworkConfig {
    */
   setNetworkConnectionStateForTest(guid, state) {
     const network = this.networkStates_.find(state => {
-      return state.guid == guid;
+      return state.guid === guid;
     });
     assertTrue(!!network, 'Network not found: ' + guid);
     network.connectionState = state;
@@ -211,7 +211,7 @@ class FakeNetworkConfig {
           state.connectRequested === undefined) {
         console.error('BAD STATE: ' + JSON.stringify(state));
       }
-      return state.connectionState !=
+      return state.connectionState !==
           chromeos.networkConfig.mojom.ConnectionStateType.kNotConnected;
     });
     this.observers_.forEach(o => o.onActiveNetworksChanged(activeNetworks));
@@ -251,7 +251,7 @@ class FakeNetworkConfig {
   getNetworkState(guid) {
     return new Promise(resolve => {
       const result = this.networkStates_.find(state => {
-        return state.guid == guid;
+        return state.guid === guid;
       });
       this.methodCalled('getNetworkState');
       resolve({result: result || null});
@@ -267,10 +267,10 @@ class FakeNetworkConfig {
     return new Promise(resolve => {
       const type = filter.networkType;
       let result;
-      if (type == chromeos.networkConfig.mojom.NetworkType.kAll) {
+      if (type === chromeos.networkConfig.mojom.NetworkType.kAll) {
         result = this.networkStates_.slice();
       } else {
-        result = this.networkStates_.filter(state => state.type == type);
+        result = this.networkStates_.filter(state => state.type === type);
       }
       this.methodCalled('getNetworkStateList');
       resolve({result: result});
@@ -285,7 +285,7 @@ class FakeNetworkConfig {
     return new Promise(resolve => {
       const devices = [];
       this.deviceStates_.forEach((state, type) => {
-        if (state.deviceState !=
+        if (state.deviceState !==
             chromeos.networkConfig.mojom.DeviceStateType.kUninitialized) {
           devices.push(state);
         }
@@ -305,7 +305,7 @@ class FakeNetworkConfig {
       let result = this.managedProperties_.get(guid);
       if (!result) {
         const foundState = this.networkStates_.find(state => {
-          return state.guid == guid;
+          return state.guid === guid;
         });
         if (foundState) {
           result = OncMojo.getDefaultManagedProperties(

chrome/test/data/webui/cr_components/certificate_manager_test.js

@@ -943,7 +943,7 @@ import {eventToPromise} from '../test_util.m.js';
       importButton.click();
       return browserProxy.whenCalled(proxyMethodName)
           .then(function(arg) {
-            if (proxyMethodName == 'importPersonalCertificate') {
+            if (proxyMethodName === 'importPersonalCertificate') {
               assertNotEquals(arg, undefined);
               assertEquals(arg, bindBtn);
             }

chrome/test/data/webui/discards/discards_test.js

@@ -41,8 +41,8 @@ suite('discards', function() {
         .forEach((sortKey) => {
           assertTrue(compareTabDiscardsInfos(sortKey, dummy1, dummy2) < 0);
           assertTrue(compareTabDiscardsInfos(sortKey, dummy2, dummy1) > 0);
-          assertTrue(compareTabDiscardsInfos(sortKey, dummy1, dummy1) == 0);
-          assertTrue(compareTabDiscardsInfos(sortKey, dummy2, dummy2) == 0);
+          assertTrue(compareTabDiscardsInfos(sortKey, dummy1, dummy1) === 0);
+          assertTrue(compareTabDiscardsInfos(sortKey, dummy2, dummy2) === 0);
         });
   });
 

chrome/test/data/webui/draganddroptoinput.js

@@ -8,7 +8,7 @@ var embedder = null;
 window.addEventListener('message', function(e) {
   var data = JSON.parse(e.data)[0];
   window.console.log('guest gets message ' + data);
-  if (data == 'create-channel') {
+  if (data === 'create-channel') {
     embedder = e.source;
     doPostMessage('connected');
   }
@@ -27,21 +27,21 @@ var destNode = document.getElementById('dest');
 var testStep = 0;
 destNode.addEventListener('dragenter', function(e) {
   console.log('node drag enter');
-  if (testStep == 0) {
+  if (testStep === 0) {
     doPostMessage('Step1: destNode gets dragenter');
     testStep = 1;
   }
 });
 
 destNode.addEventListener('dragover', function(e) {
-  if (testStep == 1) {
+  if (testStep === 1) {
     doPostMessage('Step2: destNode gets dragover');
     testStep = 2;
   }
 });
 
 destNode.addEventListener('drop', function(e) {
-  if (testStep == 2) {
+  if (testStep === 2) {
     doPostMessage('Step3: destNode gets drop');
     testStep = 3;
   }

chrome/test/data/webui/js/i18n_behavior_test.js

@@ -46,7 +46,7 @@ suite('I18nBehaviorModuleTest', function() {
     I18nBehavior.i18nAdvanced('customAttr', {
       attrs: {
         is: function(el, val) {
-          return el.tagName == 'A' && val == 'action-link';
+          return el.tagName === 'A' && val === 'action-link';
         },
       },
     });

chrome/test/data/webui/management/a11y/management_a11y_test.js

@@ -54,8 +54,8 @@ var CrManagementA11yTest = class extends PolymerTest {
       },
       'list': function(nodeResult) {
         return nodeResult && nodeResult.element &&
-            nodeResult.element.tagName == 'UL' &&
-            nodeResult.element.getElementsByTagName('DOM-REPEAT').length != 0;
+            nodeResult.element.tagName === 'UL' &&
+            nodeResult.element.getElementsByTagName('DOM-REPEAT').length !== 0;
       },
     };
   }

chrome/test/data/webui/mocha_adapter.js

@@ -38,7 +38,7 @@ function BrowserTestReporter(runner) {
     if (err.stack) {
       var stack = err.stack.split('\n');
       for (var i = 0; i < stack.length; i++) {
-        if (stack[i].indexOf('mocha.js:') == -1) {
+        if (stack[i].indexOf('mocha.js:') === -1) {
           message += stack[i] + '\n';
         }
       }
@@ -51,7 +51,7 @@ function BrowserTestReporter(runner) {
 
   // Report the results to the test API.
   runner.on('end', function() {
-    if (failures == 0) {
+    if (failures === 0) {
       if (passes > 0) {
         testDone();
       } else {

chrome/test/data/webui/mock_controller.js

@@ -11,7 +11,7 @@
     var fn = function() {
       var args = Array.prototype.slice.call(arguments);
       var callbacks = args.filter(function(arg) {
-        return (typeof arg == 'function');
+        return (typeof arg === 'function');
       });
 
       if (callbacks.length > 1) {
@@ -21,7 +21,7 @@
       }
 
       fn.recordCall(args);
-      if (callbacks.length == 1) {
+      if (callbacks.length === 1) {
         callbacks[0].apply(undefined, fn.callbackData);
         return;
       }
@@ -109,7 +109,7 @@
    * @return True if arg is not function type.
    */
   notFunction_(arg) {
-    return typeof arg != 'function';
+    return typeof arg !== 'function';
   }
 }
 

chrome/test/data/webui/multidevice_setup/start_setup_page_test.js

@@ -74,7 +74,7 @@ cr.define('multidevice_setup', () => {
         const optionNodeList =
             startSetupPageElement.$.deviceDropdown.querySelectorAll('option');
         for (option of optionNodeList.values()) {
-          if (option.textContent.trim() == optionText) {
+          if (option.textContent.trim() === optionText) {
             MockInteractions.tap(option);
             return;
           }

chrome/test/data/webui/net_internals/chromeos_view.js

@@ -24,11 +24,11 @@ DebugLogsStatusWatcher.prototype = {
   },
 
   onStoreDebugLogs: function(status) {
-    if (status.indexOf('Created') != -1) {
+    if (status.indexOf('Created') !== -1) {
       this.onTaskDone(true);
       return;
     }
-    if (status.indexOf('Failed') != -1) {
+    if (status.indexOf('Failed') !== -1) {
       this.onTaskDone(false);
       return;
     }

chrome/test/data/webui/net_internals/domain_security_policy_view.js

@@ -52,7 +52,7 @@ CheckQueryResultTask.prototype = {
 
     // Each case has its own validation function because of the design of the
     // test reporting infrastructure.
-    if (result.error != undefined) {
+    if (result.error !== undefined) {
       this.checkError_(result);
     } else if (!result.result) {
       this.checkNotFound_(result);

chrome/test/data/webui/net_internals/net_internals_test.js

@@ -99,7 +99,7 @@ var NetInternalsTest = (function() {
    * @return {node} The tbody node, or null.
    */
   NetInternalsTest.getTbodyDescendent = function(ancestorId) {
-    if ($(ancestorId).nodeName == 'TBODY') {
+    if ($(ancestorId).nodeName === 'TBODY') {
       return $(ancestorId);
     }
     // The tbody element of the first styled table in |parentId|.
@@ -154,7 +154,7 @@ var NetInternalsTest = (function() {
     var currentChild = tbody.children[0];
     while (currentChild) {
       if (NetInternalsTest.nodeIsVisible(currentChild)) {
-        if (row == 0) {
+        if (row === 0) {
           return currentChild.children[column].innerText;
         }
         --row;
@@ -190,7 +190,7 @@ var NetInternalsTest = (function() {
    * @return {bool} Whether or not the node is visible.
    */
   NetInternalsTest.nodeIsVisible = function(node) {
-    return node.style.display != 'none';
+    return node.style.display !== 'none';
   };
 
   /**
@@ -275,7 +275,7 @@ var NetInternalsTest = (function() {
     var tabIdToView = tabSwitcher.getAllTabViews();
     for (var curTabId in tabIdToView) {
       expectEquals(
-          curTabId == tabId, tabSwitcher.getTabView(curTabId).isVisible(),
+          curTabId === tabId, tabSwitcher.getTabView(curTabId).isVisible(),
           curTabId + ': Unexpected visibility state.');
     }
   };
@@ -529,7 +529,7 @@ var NetInternalsTest = (function() {
    */
   NetInternalsTest.isDisplayed = function(node) {
     var style = getComputedStyle(node);
-    return style.getPropertyValue('display') != 'none';
+    return style.getPropertyValue('display') !== 'none';
   };
 
   /**
@@ -544,7 +544,7 @@ var NetInternalsTest = (function() {
 
     for (var i = 0; i < allIds.length; ++i) {
       var curId = allIds[i];
-      expectEquals(nodeId == curId, NetInternalsTest.nodeIsVisible($(curId)));
+      expectEquals(nodeId === curId, NetInternalsTest.nodeIsVisible($(curId)));
     }
   };
 

chrome/test/data/webui/new_tab_page/grid_focus_test.js

@@ -158,7 +158,7 @@ suite('NewTabPageGridFocusTest', () => {
 
       // Assert.
       const focusedIndex =
-          (param.size % param.columns == 0 ? param.size : param.columns) - 1;
+          (param.size % param.columns === 0 ? param.size : param.columns) - 1;
       assertFocus(grid.children[focusedIndex]);
     });
 
@@ -184,7 +184,7 @@ suite('NewTabPageGridFocusTest', () => {
 
       // Assert.
       const focusedIndex =
-          (param.size % param.columns == 0 ? param.size : param.columns) - 1;
+          (param.size % param.columns === 0 ? param.size : param.columns) - 1;
       assertFocus(grid.children[focusedIndex]);
     });
 

chrome/test/data/webui/sample_downloads.js

@@ -14,7 +14,7 @@ function DISABLED_testAssertFalse() {
 }
 
 function testInitialFocus() {
-  assertTrue(document.activeElement.id == 'term', '');
+  assertTrue(document.activeElement.id === 'term', '');
 }
 
 function testConsoleError() {

chrome/test/data/webui/sandboxstatus_browsertest.js

@@ -116,7 +116,7 @@ TEST_F('GPUSandboxStatusUITest', 'DISABLED_testGPUSandboxEnabled', function() {
         let gpuno = addedNode.innerText.match(gpunostring);
         if (gpuyes || gpuno) {
           expectEquals(null, gpuno);
-          expectTrue(gpuyes && (gpuyes[0] == gpuyesstring));
+          expectTrue(gpuyes && (gpuyes[0] === gpuyesstring));
           testDone();
         }
       }

chrome/test/data/webui/sys_internals/line_chart/data_series_test.js

@@ -80,7 +80,7 @@ LineChartTest.DataSeries = function() {
       assertDeepEquals(dataSeries.getValues(0, 1000, 3), [null, 10, 20]);
       assertEquals(dataSeries.getMaxValue(0, 1000, 3), 20);
 
-      /* (10 + 20) / 2 == 15 */
+      /* (10 + 20) / 2 === 15 */
       assertDeepEquals(dataSeries.getValues(0, 3000, 1), [15]);
       assertEquals(dataSeries.getMaxValue(0, 3000, 1), 15);
 

chrome/test/data/webui/sys_internals/page_switch_test.js

@@ -40,15 +40,15 @@ PageTest.Switch = function() {
       const lineChart = SysInternals.lineChart;
       assertTrue(lineChart.shouldRender());
       const PAGE_HASH = SysInternals.PAGE_HASH;
-      if (hash == PAGE_HASH.CPU) {
+      if (hash === PAGE_HASH.CPU) {
         assertEquals(lineChart.subCharts_[0].dataSeriesList_.length, 0);
         assertEquals(lineChart.subCharts_[1].dataSeriesList_.length, 9);
         assertEquals(lineChart.menu_.buttons_.length, 9);
-      } else if (hash == PAGE_HASH.MEMORY) {
+      } else if (hash === PAGE_HASH.MEMORY) {
         assertEquals(lineChart.subCharts_[0].dataSeriesList_.length, 2);
         assertEquals(lineChart.subCharts_[1].dataSeriesList_.length, 2);
         assertEquals(lineChart.menu_.buttons_.length, 4);
-      } else if (hash == PAGE_HASH.ZRAM) {
+      } else if (hash === PAGE_HASH.ZRAM) {
         assertEquals(lineChart.subCharts_[0].dataSeriesList_.length, 2);
         assertEquals(lineChart.subCharts_[1].dataSeriesList_.length, 3);
         assertEquals(lineChart.menu_.buttons_.length, 5);
@@ -69,7 +69,7 @@ PageTest.Switch = function() {
       clickDrawerBtn(btnIndex);
       return promiseResolvers.waitOnHashChangeCompleted.promise.then(
           function() {
-            if (hash == SysInternals.PAGE_HASH.INFO) {
+            if (hash === SysInternals.PAGE_HASH.INFO) {
               checkInfoPage();
             } else {
               checkChartPage(hash);

chrome/test/data/webui/test_api.js

@@ -79,7 +79,7 @@ Test.disableAnimationsAndTransitions = function() {
 
   var realElementAnimate = Element.prototype.animate;
   Element.prototype.animate = function(keyframes, opt_options) {
-    if (typeof opt_options == 'object') {
+    if (typeof opt_options === 'object') {
       opt_options.duration = 0;
     } else {
       opt_options = 0;
@@ -247,7 +247,7 @@ Test.prototype = {
    * @type {Function}
    */
   tearDown: function() {
-    if (typeof document != 'undefined') {
+    if (typeof document !== 'undefined') {
       var noAnimationStyle = document.getElementById('no-animation');
       if (noAnimationStyle) {
         noAnimationStyle.parentNode.removeChild(noAnimationStyle);
@@ -536,7 +536,7 @@ function makeMockFunctions(functionNames) {
  */
 function send(messageName) {
   var callback = sendCallbacks[messageName];
-  if (callback != undefined) {
+  if (callback !== undefined) {
     callback[1].apply(callback[0], Array.prototype.slice.call(arguments, 1));
   } else {
     this.__proto__.send.apply(this.__proto__, arguments);
@@ -855,7 +855,7 @@ function runTest(isAsync, testFunction, testArguments) {
 
   // Depending on how we were called, |this| might not resolve to the global
   // context.
-  if (testName == 'RUN_TEST_F' && testBody === undefined) {
+  if (testName === 'RUN_TEST_F' && testBody === undefined) {
     testBody = RUN_TEST_F;
   }
 
@@ -863,7 +863,7 @@ function runTest(isAsync, testFunction, testArguments) {
     testBody = /** @type{Function} */ (eval(testFunction));
     testName = testBody.toString();
   }
-  if (testBody != RUN_TEST_F) {
+  if (testBody !== RUN_TEST_F) {
     console.log('Running test ' + testName);
   }
 
@@ -1321,8 +1321,8 @@ RunAllAction.prototype = {
         result = this.actions_[i].invoke();
       }
 
-      if ((this.whenTestDone_ == WhenTestDone.EXPECT && errors.length) ||
-          this.whenTestDone_ == WhenTestDone.ALWAYS) {
+      if ((this.whenTestDone_ === WhenTestDone.EXPECT && errors.length) ||
+          this.whenTestDone_ === WhenTestDone.ALWAYS) {
         testDone();
       }
 
@@ -1337,7 +1337,7 @@ RunAllAction.prototype = {
       }
 
       errors.push(e);
-      if (this.whenTestDone_ != WhenTestDone.NEVER) {
+      if (this.whenTestDone_ !== WhenTestDone.NEVER) {
         testDone();
       }
     }

chrome/test/data/webui/test_util.js

@@ -19,14 +19,14 @@ cr.define('test_util', function() {
   /* #export */ function whenAttributeIs(
       target, attributeName, attributeValue) {
     function isDone() {
-      return target.getAttribute(attributeName) == attributeValue;
+      return target.getAttribute(attributeName) === attributeValue;
     }
 
     return isDone() ? Promise.resolve() : new Promise(function(resolve) {
       new MutationObserver(function(mutations, observer) {
         for (const mutation of mutations) {
           assertEquals('attributes', mutation.type);
-          if (mutation.attributeName == attributeName && isDone()) {
+          if (mutation.attributeName === attributeName && isDone()) {
             observer.disconnect();
             resolve();
             return;

chrome/test/data/webui/user_manager/control_bar_tests.js

@@ -48,7 +48,7 @@ cr.define('user_manager.control_bar_tests', function() {
         return new Promise(function(resolve, reject) {
           // We expect to go to the 'create-profile' page.
           listenOnce(controlBarElement, 'change-page', function(event) {
-            if (event.detail.page == 'create-user-page') {
+            if (event.detail.page === 'create-user-page') {
               resolve();
             }
           });
@@ -123,7 +123,7 @@ cr.define('user_manager.control_bar_tests', function() {
         return new Promise(function(resolve, reject) {
           // We expect to go to the 'create-profile' page.
           listenOnce(controlBarElement, 'change-page', function(event) {
-            if (event.detail.page == 'create-user-page') {
+            if (event.detail.page === 'create-user-page') {
               resolve();
             }
           });

chrome/test/data/webui/user_manager/create_profile_tests.js

@@ -66,7 +66,7 @@ cr.define('user_manager.create_profile_tests', function() {
         // Create shortcut checkbox is invisible.
         const createShortcutCheckbox =
             createProfileElement.$.createShortcutCheckbox;
-        assertTrue(createShortcutCheckbox.clientHeight == 0);
+        assertTrue(createShortcutCheckbox.clientHeight === 0);
 
         // Enter a profile name.
         createProfileElement.$.nameInput.value = 'profile name';
@@ -85,7 +85,7 @@ cr.define('user_manager.create_profile_tests', function() {
         return new Promise(function(resolve, reject) {
           // Create is not in progress. We expect to leave the page.
           createProfileElement.addEventListener('change-page', function(event) {
-            if (event.detail.page == 'user-pods-page') {
+            if (event.detail.page === 'user-pods-page') {
               resolve();
             }
           });
@@ -99,7 +99,7 @@ cr.define('user_manager.create_profile_tests', function() {
         return new Promise(function(resolve, reject) {
           // Create was successful. We expect to leave the page.
           createProfileElement.addEventListener('change-page', function(event) {
-            if (event.detail.page == 'user-pods-page') {
+            if (event.detail.page === 'user-pods-page') {
               resolve();
             }
           });

chrome/test/data/webui/webview_content_script_test.js

@@ -14,7 +14,7 @@ function createWebview() {
 }
 
 function onGetBackgroundExecuted(results) {
-  chrome.send('testResult', [results.length == 1 && results[0] == 'red']);
+  chrome.send('testResult', [results.length === 1 && results[0] === 'red']);
 }
 
 function testExecuteScriptCode(url) {
@@ -77,11 +77,11 @@ function testAddContentScript(url) {
   });
 
   window.addEventListener('message', function(e) {
-    if (e.source != webview.contentWindow) {
+    if (e.source !== webview.contentWindow) {
       return;
     }
     var data = JSON.parse(e.data);
-    if (data == RESPONSE_FROM_COMM_CHANNEL_1) {
+    if (data[0] === RESPONSE_FROM_COMM_CHANNEL_1) {
       console.log(
           'Step 3: A communication channel has been established with webview.');
       chrome.send('testResult', [true]);
@@ -129,11 +129,11 @@ function testAddMultiContentScripts(url) {
   var response_1 = false;
   var response_2 = false;
   window.addEventListener('message', function(e) {
-    if (e.source != webview.contentWindow) {
+    if (e.source !== webview.contentWindow) {
       return;
     }
     var data = JSON.parse(e.data);
-    if (data == RESPONSE_FROM_COMM_CHANNEL_1) {
+    if (data[0] === RESPONSE_FROM_COMM_CHANNEL_1) {
       console.log(
           'Step 4: A communication channel has been established with webview.');
       response_1 = true;
@@ -141,7 +141,7 @@ function testAddMultiContentScripts(url) {
         chrome.send('testResult', [true]);
       }
       return;
-    } else if (data == RESPONSE_FROM_COMM_CHANNEL_2) {
+    } else if (data[0] === RESPONSE_FROM_COMM_CHANNEL_2) {
       console.log(
           'Step 5: A communication channel has been established with webview.');
       response_2 = true;
@@ -191,11 +191,11 @@ function testAddContentScriptWithSameNameShouldOverwriteTheExistingOne(url) {
 
   var should_get_response_from_script_1 = true;
   window.addEventListener('message', function(e) {
-    if (e.source != webview.contentWindow) {
+    if (e.source !== webview.contentWindow) {
       return;
     }
     var data = JSON.parse(e.data);
-    if (data == RESPONSE_FROM_COMM_CHANNEL_1) {
+    if (data[0] === RESPONSE_FROM_COMM_CHANNEL_1) {
       if (should_get_response_from_script_1) {
         console.log(
             'Step 2: A communication channel has been established with webview.');
@@ -215,7 +215,7 @@ function testAddContentScriptWithSameNameShouldOverwriteTheExistingOne(url) {
         chrome.send('testResult', [false]);
       }
       return;
-    } else if (data == RESPONSE_FROM_COMM_CHANNEL_2) {
+    } else if (data[0] === RESPONSE_FROM_COMM_CHANNEL_2) {
       console.log(
           'Step 4: Another communication channel has been established ' +
           'with webview.');
@@ -257,11 +257,11 @@ function testAddContentScriptToOneWebViewShouldNotInjectToTheOtherWebView(url) {
   });
 
   window.addEventListener('message', function(e) {
-    if (e.source != webview2.contentWindow) {
+    if (e.source !== webview2.contentWindow) {
       return;
     }
     var data = JSON.parse(e.data);
-    if (data == RESPONSE_FROM_COMM_CHANNEL_1) {
+    if (data[0] === RESPONSE_FROM_COMM_CHANNEL_1) {
       chrome.send('testResult', [false]);
       return;
     }
@@ -295,12 +295,12 @@ function testAddAndRemoveContentScripts(url) {
 
   var count = 0;
   webview.addEventListener('loadstop', function() {
-    if (count == 0) {
+    if (count === 0) {
       console.log('Step 2: post message to build connect.');
       var msg = [REQUEST_TO_COMM_CHANNEL_1];
       webview.contentWindow.postMessage(JSON.stringify(msg), '*');
       ++count;
-    } else if (count == 1) {
+    } else if (count === 1) {
       console.log('Step 5: post message to build connect again.');
       var msg = [REQUEST_TO_COMM_CHANNEL_1];
       webview.contentWindow.postMessage(JSON.stringify(msg), '*');
@@ -311,11 +311,11 @@ function testAddAndRemoveContentScripts(url) {
   });
 
   window.addEventListener('message', function(e) {
-    if (e.source != webview.contentWindow) {
+    if (e.source !== webview.contentWindow) {
       return;
     }
     var data = JSON.parse(e.data);
-    if (data[0] == RESPONSE_FROM_COMM_CHANNEL_1 &&
+    if (data[0] === RESPONSE_FROM_COMM_CHANNEL_1 &&
         should_get_response_from_script_1) {
       console.log(
           'Step 3: A communication channel has been established ' +
@@ -367,12 +367,12 @@ function testAddContentScriptsWithNewWindowAPI(url) {
   });
 
   window.addEventListener('message', function(e) {
-    if (!newwebview || e.source != newwebview.contentWindow) {
+    if (!newwebview || e.source !== newwebview.contentWindow) {
       return;
     }
     var data = JSON.parse(e.data);
-    if (data == RESPONSE_FROM_COMM_CHANNEL_1 &&
-        e.source == newwebview.contentWindow) {
+    if (data[0] === RESPONSE_FROM_COMM_CHANNEL_1 &&
+        e.source === newwebview.contentWindow) {
       console.log(
           'Step 5: a communication channel has been established ' +
           'with the new webview.');
@@ -406,12 +406,12 @@ function testContentScriptIsInjectedAfterTerminateAndReloadWebView(url) {
 
   var count = 0;
   webview.addEventListener('loadstop', function() {
-    if (count == 0) {
+    if (count === 0) {
       console.log('Step 2: call webview.terminate().');
       webview.terminate();
       ++count;
       return;
-    } else if (count == 1) {
+    } else if (count === 1) {
       console.log('Step 4: call <webview>.executeScript to check result.');
       webview.executeScript(
           {code: 'document.body.style.backgroundColor;'},
@@ -443,7 +443,7 @@ function testContentScriptExistsAsLongAsWebViewTagExists(url) {
 
   var count = 0;
   webview.addEventListener('loadstop', function() {
-    if (count == 0) {
+    if (count === 0) {
       console.log('Step 2: check the result of content script injected.');
       webview.executeScript(
           {code: 'document.body.style.backgroundColor;'}, function(results) {
@@ -456,7 +456,7 @@ function testContentScriptExistsAsLongAsWebViewTagExists(url) {
             document.body.appendChild(webview);
             ++count;
           });
-    } else if (count == 1) {
+    } else if (count === 1) {
       console.log('Step 5: check the result of content script injected again.');
       webview.executeScript(
           {code: 'document.body.style.backgroundColor;'},
@@ -517,7 +517,7 @@ function testDragAndDropToInput() {
   });
 
   webview.addEventListener('loadstop', function(e) {
-    if (webview.src != 'about:blank') {
+    if (webview.src !== 'about:blank') {
       return;
     }
     console.log('load stop of src = :' + webview.src);