Add tokens and entry points for KHR_blend_equation_advanced

src/gpu/gl/GrGLNoOpInterface.cpp

Index: src/gpu/gl/GrGLNoOpInterface.cpp
diff --git a/src/gpu/gl/GrGLNoOpInterface.cpp b/src/gpu/gl/GrGLNoOpInterface.cpp
index 6b8880ed81c9c19ad1bf646438b4a88fa41e2ba1..57671fcce961ce5cf42c6bd575df80c3c5035321 100644
--- a/src/gpu/gl/GrGLNoOpInterface.cpp
+++ b/src/gpu/gl/GrGLNoOpInterface.cpp
@@ -28,7 +28,9 @@ static const char* kExtensions[] = {
     "GL_ARB_draw_buffers",
     "GL_ARB_occlusion_query",
     "GL_EXT_blend_color",
-    "GL_EXT_stencil_wrap"
+    "GL_EXT_blend_subtract",

[Mark Kilgard, 2015/04/02 22:41:43]

If you remove EXT_blend_subtract, remove this too, right?

[Chris Dalton, 2015/04/17 07:53:42]

I don't mind taking it out, but I think we should stay consistent and also
remove GL_EXT_blend_color if we omit this one.

[bsalomon, 2015/04/21 15:21:51]

It seems ok to remove both.

+    "GL_EXT_stencil_wrap",
+    "GL_KHR_blend_equation_advanced"
 };
 
 namespace {
@@ -48,15 +50,21 @@ const GrGLubyte* combined_extensions_string() {
 }
 }
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBindFragDataLocation(GrGLuint program,
+                                                        GrGLuint colorNumber,
+                                                        const GrGLchar* name) {
+}
+
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBlendBarrier() {
+}
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBlendColor(GrGLclampf red,
                                               GrGLclampf green,
                                               GrGLclampf blue,
                                               GrGLclampf alpha) {
 }
 
-GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBindFragDataLocation(GrGLuint program,
-                                                        GrGLuint colorNumber,
-                                                        const GrGLchar* name) {
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBlendEquation(GrGLenum mode) {
 }
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBlendFunc(GrGLenum sfactor,