Revert r2122, r2116, r2108 Now that Chrome's PlatformDevice doesn't inherit from SkDevice.

Review URL: http://codereview.appspot.com/5178045

git-svn-id: http://skia.googlecode.com/svn/trunk@2396 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed