Improve handling of FF vertex array state

R=robertphillips@google.com, jvanverth@google.com

Author: bsalomon@google.com

Review URL: https://chromiumcodereview.appspot.com/23542013

git-svn-id: http://skia.googlecode.com/svn/trunk@11154 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLDefines.h b/src/gpu/gl/GrGLDefines.h
index a843953..0dbd425 100644
--- a/src/gpu/gl/GrGLDefines.h
+++ b/src/gpu/gl/GrGLDefines.h
@@ -559,6 +559,7 @@
 #define GR_GL_VERTEX_ARRAY                       0x8074
 #define GR_GL_NORMAL_ARRAY                       0x8075
 #define GR_GL_COLOR_ARRAY                        0x8076
+#define GR_GL_SECONDARY_COLOR_ARRAY              0x845E
 #define GR_GL_INDEX_ARRAY                        0x8077
 #define GR_GL_TEXTURE_COORD_ARRAY                0x8078
 #define GR_GL_EDGE_FLAG_ARRAY                    0x8079