Change IME conversion status by focusing input element

This CL affects Windows except 8.
 example: When user input focuses <input inputmode="kana" />, IME changes its mode to Hiragana input mode if the IME has.
inputmode attribute is specified in HTML5 draft:
 http://www.w3.org/html/wg/drafts/html/master/single-page.html#input-modalities:-the-inputmode-attribute

TEST=manual test using MS-IME and GoogleJapaneseInput

BUG=244688

Review URL: https://chromiumcodereview.appspot.com/21189003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@216494 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed