Fix a few spelling errors in comments.

chrome/browser/chromeos/input_method/textinput_browsertest.cc

 // Copyright 2013 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 "chrome/browser/chromeos/input_method/textinput_test_helper.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/interactive_test_utils.h"
@@ skipping 109 matching lines @@
   EXPECT_EQ(ui::TEXT_INPUT_TYPE_NONE, helper.GetTextInputType());
 
   content::WebContents* tab =
       browser()->tab_strip_model()->GetActiveWebContents();
 
   std::string coordinate;
   ASSERT_TRUE(content::ExecuteScript(
           tab,
           "document.getElementById('text_id').focus();"));
 
-  // Expects PASSWORD text input type because javascript will chagne the focus
+  // Expects PASSWORD text input type because javascript will change the focus
   // to password field in #text_id's onfocus handler.
   helper.WaitForTextInputStateChanged(ui::TEXT_INPUT_TYPE_PASSWORD);
   EXPECT_EQ(ui::TEXT_INPUT_TYPE_PASSWORD, helper.GetTextInputType());
 
   ASSERT_TRUE(helper.ClickElement("text_id", tab));
   // Expects PASSWORD text input type because javascript will chagne the focus
   // to password field in #text_id's onfocus handler.
   helper.WaitForTextInputStateChanged(ui::TEXT_INPUT_TYPE_PASSWORD);
   EXPECT_EQ(ui::TEXT_INPUT_TYPE_PASSWORD, helper.GetTextInputType());
 }
@@ skipping 155 matching lines @@
                                               0);
   content::WebContents* new_tab =
       browser()->tab_strip_model()->GetActiveWebContents();
   EXPECT_NE(base_tab, new_tab);
 
   helper.WaitForTextInputStateChanged(ui::TEXT_INPUT_TYPE_TEXT);
   EXPECT_EQ(ui::TEXT_INPUT_TYPE_TEXT, helper.GetTextInputType());
 }
 
 } // namespace chromeos