Fix some spelling in extension_updater_unittest.cc

chrome/browser/extensions/updater/extension_updater_unittest.cc

 // Copyright (c) 2012 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.
 
 #include <map>
 #include <set>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
@@ skipping 1232 matching lines @@
     EXPECT_LT(seconds_diff - results.daystart_elapsed_seconds, 5);
   }
 
  private:
   MessageLoop loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread file_thread_;
   content::TestBrowserThread io_thread_;
 };
 
-// Because we test some private methods of ExtensionUpdater, it's easer for the
+// Because we test some private methods of ExtensionUpdater, it's easier for the
 // actual test code to live in ExtenionUpdaterTest methods instead of TEST_F
 // subclasses where friendship with ExtenionUpdater is not inherited.
 
 TEST_F(ExtensionUpdaterTest, TestExtensionUpdateCheckRequests) {
   TestExtensionUpdateCheckRequests(false);
 }
 
 TEST_F(ExtensionUpdaterTest, TestExtensionUpdateCheckRequestsPending) {
   TestExtensionUpdateCheckRequests(true);
 }
@@ skipping 182 matching lines @@
 // -prodversionmin (shouldn't update if browser version too old)
 // -manifests & updates arriving out of order / interleaved
 // -malformed update url (empty, file://, has query, has a # fragment, etc.)
 // -An extension gets uninstalled while updates are in progress (so it doesn't
 //  "come back from the dead")
 // -An extension gets manually updated to v3 while we're downloading v2 (ie
 //  you don't get downgraded accidentally)
 // -An update manifest mentions multiple updates
 
 }  // namespace extensions