Fix some grammar in chrome/browser/resources/

chrome/browser/net/sqlite_persistent_cookie_store_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 "base/bind.h"
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
@@ skipping 168 matching lines @@
   ASSERT_STREQ("Y", cookies[0]->Value().c_str());
   STLDeleteContainerPointers(cookies.begin(), cookies.end());
   cookies.clear();
 }
 
 // Test if data is stored as expected in the SQLite database.
 TEST_F(SQLitePersistentCookieStoreTest, TestPersistance) {
   InitializeStore(false);
   AddCookie("A", "B", "http://foo.bar", "/", base::Time::Now());
   // Replace the store effectively destroying the current one and forcing it
-  // to write it's data to disk. Then we can see if after loading it again it
+  // to write its data to disk. Then we can see if after loading it again it
   // is still there.
   DestroyStore();
   // Reload and test for persistence
   std::vector<net::CookieMonster::CanonicalCookie*> cookies;
   CreateAndLoad(false, &cookies);
   ASSERT_EQ(1U, cookies.size());
   ASSERT_STREQ("http://foo.bar", cookies[0]->Domain().c_str());
   ASSERT_STREQ("A", cookies[0]->Name().c_str());
   ASSERT_STREQ("B", cookies[0]->Value().c_str());
 
@@ skipping 245 matching lines @@
 
   EXPECT_FALSE(cookie_map["session-noexpires"]->DoesExpire());
   EXPECT_FALSE(cookie_map["session-noexpires"]->IsPersistent());
 
   EXPECT_TRUE(cookie_map["persistent"]->DoesExpire());
   EXPECT_TRUE(cookie_map["persistent"]->IsPersistent());
 
   STLDeleteContainerPointers(cookies.begin(), cookies.end());
   cookies.clear();
 }