Support MSAA4 and (non-ES) OpenGL in Android SampleApp

Add a menu item to set the OpenGL context type that SampleApp uses on
Android. The submenu of the new item will present options to create
OpenGL ES or OpenGL, aliased or multisampled.

R=djsollen@google.com, bsalomon@google.com

Author: kkinnunen@nvidia.com

Review URL: https://codereview.chromium.org/60273006

git-svn-id: http://skia.googlecode.com/svn/trunk@12610 2bbb7eff-a529-9590-31e7-b0007b416f81
8 files changed