Add the definition of the webRequest and webNavigation APIs.

chrome/test/data/extensions/api_test/webnavigation/api/test.html

Index: chrome/test/data/extensions/api_test/webnavigation/api/test.html
diff --git a/chrome/test/data/extensions/api_test/webnavigation/api/test.html b/chrome/test/data/extensions/api_test/webnavigation/api/test.html
new file mode 100644
index 0000000000000000000000000000000000000000..03c70a5312de41510985b5dea59d4da67bdd55dc
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/webnavigation/api/test.html
@@ -0,0 +1,15 @@
+<script>
+chrome.experimental.webNavigation.onBeforeNavigate.addListener(
+    function(details) {});
+chrome.experimental.webNavigation.onCommitted.addListener(
+    function(details) {});
+chrome.experimental.webNavigation.onDOMContentLoaded.addListener(
+    function(details) {});
+chrome.experimental.webNavigation.onCompleted.addListener(
+    function(details) {});
+chrome.experimental.webNavigation.onErrorOccurred.addListener(
+    function(details) {});
+chrome.experimental.webNavigation.onBeforeRetarget.addListener(
+    function(details) {});
+chrome.test.notifyPass();
+</script>