update mesa version mapping to GL version

mesa3d have updated to 10.0 to support OpenGL 3.3, see http://www.mesa3d.org/index.html. At least Intel has implemented mesa 10.0 on IA.

BUG=None
R=bsalomon@google.com

Author: yunchao.he@intel.com

Review URL: https://codereview.chromium.org/143803012

git-svn-id: http://skia.googlecode.com/svn/trunk@13140 2bbb7eff-a529-9590-31e7-b0007b416f81

src/gpu/gl/GrGLUtil.cpp

@@ -75,6 +75,10 @@ bool get_gl_version_for_mesa(int mesaMajorVersion, int* major, int* minor) {
             *major = 3;
             *minor = 1;
             return true;
+        case 10:
+            *major = 3;
+            *minor = 3;
+            return true;
         default:
             return false;
     }