Remove unused functions: searchMenu{NoRecent,Recent,ClearRecent}SearchesText().

BUG=none
TEST=none; no behavior changes.

Review URL: https://chromiumcodereview.appspot.com/25193002

git-svn-id: svn://svn.chromium.org/blink/trunk@158506 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Do not create multiple Locale objects for the default locale.

Remove Locale::createDefault, and introduce Local::defaultLocale, which return a
static Locale object for defaultLanguage().

BUG=298020
TEST=none; no behavior changes.

Review URL: https://chromiumcodereview.appspot.com/25194002

git-svn-id: svn://svn.chromium.org/blink/trunk@158507 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Implement ShadowRoot.styleSheets.

BUG=234157

TEST=fast/dom/StyleSheet/css-insert-import-rule-to-shadow-stylesheets.html,fast/dom/StyleSheet/detached-shadow-style.html,fast/dom/StyleSheet/empty-shadow-style.html

Review URL: https://chromiumcodereview.appspot.com/23533018

git-svn-id: svn://svn.chromium.org/blink/trunk@158508 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Compute getComputedStyle(x).lineHeight accurately while zooming.

Use accurated and not rounded off values for computing font size
and for line-height calculations use float, instead of integer.

BUG=277378

Review URL: https://chromiumcodereview.appspot.com/25024002

git-svn-id: svn://svn.chromium.org/blink/trunk@158509 bbb929c8-8fbe-4397-9dbb-9b2b20218538