Merge pull request #1327 from ds-hwang/crosswalk-2

[Tizen] Enable pinch.
Roll chromium to 55fcd09 to fix compile fail.

Bring in 7 commits:
55fcd09 Fix errata related to multi touch.
137e736 Build fix linux aura without USE_XI2_MT.
6dd5ac8 Revert "[Tizen] Camera driver integration for Tizen"
55fef92 [Backport] Aura: enable the touch events dispatch in DesktopRootWindowHostX11
94f1301 Use XmbSetWMProperties to set window title for i18n issue
7105ed7 [Temp] Add test interface for device motion/orientation.
afe0d86 [Tizen] Camera driver integration for Tizen