chrome.tabs.onUpdated doesn't called with 'loading' twice.

chrome/test/data/extensions/api_test/tabs/on_updated/test.js

Index: chrome/test/data/extensions/api_test/tabs/on_updated/test.js
diff --git a/chrome/test/data/extensions/api_test/tabs/on_updated/test.js b/chrome/test/data/extensions/api_test/tabs/on_updated/test.js
index 05bf7e97bbff827b125fda2d6680e74faccd20b7..1c89503968e2eba4b39e65188824881642398bb6 100644
--- a/chrome/test/data/extensions/api_test/tabs/on_updated/test.js
+++ b/chrome/test/data/extensions/api_test/tabs/on_updated/test.js
@@ -119,5 +119,53 @@ chrome.test.runTests([
     ]);
 
     chrome.tabs.create({ url: getURL('favicon/a.html') });
+  },
+
+  function historyReplaceState() {
+    // No more events. Because replaceState doesn't change url.
+    expect([
+      { status: 'loading', url: getURL('historyReplaceState/a.html') },
+      { status: 'complete' }
+    ]);
+
+    chrome.tabs.create({ url: getURL('historyReplaceState/a.html') });
+  },
+
+  function historyReplaceStateUpdateUrl() {
+    // url status is updated. Because history.replaceState updates url.
+    expect([
+      { status: 'loading', url: getURL('historyReplaceStateUpdateUrl/a.html') },
+      { status: 'complete' },
+      { url: getURL('historyReplaceStateUpdateUrl/a.html#a') },
+    ]);
+
+    chrome.tabs.create({ url: getURL('historyReplaceStateUpdateUrl/a.html') });
+  },
+
+  function historyPushState() {
+    // - a.html starts loading and complete.
+    // - historyPushState doesn't updates current url.
+    expect([
+      { status: 'loading', url: getURL('historyPushState/a.html') },
+      { status: 'complete' },
+      { status: 'loading' },
+      { status: 'complete' },
+    ]);
+
+    chrome.tabs.create({ url: getURL('historyPushState/a.html') });
+  },
+
+  function historyPushStateUpdateUrl() {
+    // - a.html starts loading and complete.
+    // - historyPushState updates current url. so that 'loading' and 'complete'
+    // are fired with updated url.
+    expect([
+      { status: 'loading', url: getURL('historyPushStateUpdateUrl/a.html') },
+      { status: 'complete' },
+      { status: 'loading', url: getURL('historyPushStateUpdateUrl/a.html#a') },
+      { status: 'complete' },
+    ]);
+
+    chrome.tabs.create({ url: getURL('historyPushStateUpdateUrl/a.html') });
   }
 ]);