Use updated Khronos signature for glShaderSource
(const char* const instead of char**).

This is needed for new Khronos headers.

BUG=178589

Review URL: https://chromiumcodereview.appspot.com/12310156

git-svn-id: http://skia.googlecode.com/svn/trunk@7900 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed