ServiceWorker: Add LayoutTest for WindowClient.navigate().

LayoutTests/http/tests/serviceworker/chromium/resources/windowclient-navigate.js

+// This helper will setup a small test framework that will use TESTS and run
+// them sequentially and call self.postMessage('quit') when done.
+// This helper also exposes |client|, |postMessage()|, |runNextTestOrQuit()|,
+// |synthesizeNotificationClick()| and |initialize()|.
+importScripts('sw-test-helpers.js');
+
+function initializeClient() {
+    synthesizeNotificationClick().then(function(e) {
+        clients.openWindow('blank.html').then(function(c) {
+            return c;
+        }).then(runNextTestOrQuit);
+    });
+}
+
+var TESTS = [
+
+    initializeClient,
+
+    function testNavigateControlledClient(client) {
+        synthesizeNotificationClick().then(function(e) {
+            client.navigate('test.html').then(function(c) {
+                self.postMessage('navigate() can navigate controlled client');
+                self.postMessage('navigate() result: ' + c);
+                self.postMessage(' url: ' + c.url);
+                self.postMessage(' visibilityState: ' + c.visibilityState);
+                self.postMessage(' focused: ' + c.focused);
+                self.postMessage(' frameType: ' + c.frameType);
+                return c;
+            }).then(runNextTestOrQuit);
+        });
+    },
+
+    initializeClient,
+
+    function testNavigateNotControlledClient(client) {
+        synthesizeNotificationClick().then(function(e) {
+            client.navigate('/').then(function(c) {
+                self.postMessage('navigate() can navigate not controlled client');

[nhiroki, 2015/07/10 08:38:57]

Could you wrap this line at line 80? Our style guide[1] requires it.

[1] http://www.chromium.org/blink/serviceworker/testing#TOC-Layout-Tests-Style

+                self.postMessage('navigate() result: ' + c);
+                return c;
+            }).then(runNextTestOrQuit);
+        });
+    },
+
+    initializeClient,
+
+    function testNavigateCrossOriginClient(client) {
+        synthesizeNotificationClick().then(function(e) {
+            client.navigate('https://test.com/').then(function(c) {

[nhiroki, 2015/07/10 08:38:57]

"https://test.com/" is a real domain. Could you change this like
https://codereview.chromium.org/1224083008/ ?

+                self.postMessage('navigate() can navigate cross origin client');

[nhiroki, 2015/07/10 08:38:57]

"can navigate to a cross origin URL" ?

+                self.postMessage('navigate() result: ' + c);
+            }).then(runNextTestOrQuit);
+        });
+    },
+
+    initializeClient,
+
+    function testWithNoNotificationClick(client) {
+        client.navigate('test.html').catch(function(e) {
+            self.postMessage('navigate() can not navigate without a user interaction');

[nhiroki, 2015/07/10 08:38:57]

I think that the spec doesn't require a user interaction for navigate(). Could
you remove "synthesizeNotificationClick()" pattern from these tests?

+            self.postMessage('navigate() error is ' + e.name);
+            return client;
+        }).then(runNextTestOrQuit);
+    },
+
+    function testNavigateInvalidURL(client) {
+        synthesizeNotificationClick().then(function() {
+            client.navigate('http://[test].com').catch(function(e) {
+                self.postMessage('navigate() can not navigate an invalid url');

[nhiroki, 2015/07/10 08:38:57]

"navigate to an invalid url"

+                self.postMessage('navigate() error is ' + e.name);
+                return client;
+            }).then(runNextTestOrQuit);
+        });
+    },
+
+    function testNavigateViewSource(client) {
+        synthesizeNotificationClick().then(function() {
+            client.navigate('view-source://http://test.com').catch(function(e) {
+                self.postMessage('navigate() can not navigate view-source scheme');

[nhiroki, 2015/07/10 08:38:57]

ditto.

+                self.postMessage('navigate() error is ' + e.name);
+                return client;
+            }).then(runNextTestOrQuit);
+        });
+    },
+
+    function testNavigateFileScheme(client) {
+        synthesizeNotificationClick().then(function() {
+            client.navigate('file:///').catch(function(e) {
+                self.postMessage('navigate() can not navigate file scheme');

[nhiroki, 2015/07/10 08:38:57]

ditto.

+                self.postMessage('navigate() error is ' + e.name);
+                return client;
+            }).then(runNextTestOrQuit);
+        });
+    },
+
+    function testNavigateAboutBlank(client) {
+        synthesizeNotificationClick().then(function(e) {
+            client.navigate('about:blank').catch(function(e) {
+                self.postMessage('navigate() can not navigate about:blank');

[nhiroki, 2015/07/10 08:38:57]

ditto.

+                self.postMessage('navigate() error is ' + e.name);
+                return client;
+            }).then(runNextTestOrQuit);
+        });
+    },
+
+    function testNavigateAboutCrash(client) {
+        synthesizeNotificationClick().then(function(e) {
+            client.navigate('about:crash').catch(function(e) {
+                self.postMessage('navigate() can not navigate about:crash');

[nhiroki, 2015/07/10 08:38:57]

ditto.

+                self.postMessage('navigate() error is ' + e.name);
+                return client;
+            }).then(runNextTestOrQuit);
+        });
+    }
+];
+
+self.onmessage = function(e) {
+    if (e.data == 'start') {
+        initialize().then(runNextTestOrQuit);
+    } else {
+        initialize().then(function() {
+            self.postMessage('received unexpected message');
+            self.postMessage('quit');
+        });
+    }
+};