Add NormalizeLanguageCode() to normalize language codes.

Add NormalizeLanguageCode() to normalize language codes.

The normalization is needed to avoid duplicates in the language table in
the language config diloag, as well as the combobox in the "add language"
dialog, when engines return "jpn" and "ja" as language codes.

Along the way, fixed typos in function names.

TEST=added unit tests, and manually

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=43705

[Yusuke Sato, 2010-04-06 09:43:17]

lgtm

http://codereview.chromium.org/1512022/diff/1/4
File chrome/browser/chromeos/options/language_config_view_test.cc (right):

http://codereview.chromium.org/1512022/diff/1/4#newcode18
chrome/browser/chromeos/options/language_config_view_test.cc:18:
TEST(LanguageConfigViewTest, NormalizeLanguageCode) {
Can you add a todo like '// TODO(yusukes) test all language code that IBus uses'
or something like this.

[satorux1, 2010-04-06 11:09:38]

http://codereview.chromium.org/1512022/diff/1/4
File chrome/browser/chromeos/options/language_config_view_test.cc (right):

http://codereview.chromium.org/1512022/diff/1/4#newcode18
chrome/browser/chromeos/options/language_config_view_test.cc:18:
TEST(LanguageConfigViewTest, NormalizeLanguageCode) {
On 2010/04/06 09:43:17, Yusuke Sato wrote:
> Can you add a todo like '// TODO(yusukes) test all language code that IBus
uses'
> or something like this.

Done.

[James Su, 2010-04-06 12:53:55]

LGTM.