Add GL_CHROMIUM_screen_space_antialiasing to support alternative AA

gpu/command_buffer/client/gles2_c_lib_autogen.h

Index: gpu/command_buffer/client/gles2_c_lib_autogen.h
diff --git a/gpu/command_buffer/client/gles2_c_lib_autogen.h b/gpu/command_buffer/client/gles2_c_lib_autogen.h
index 0e43ae75f9e6885c41b11f1ce85bdb2f4a9a6571..870a4f9a4cb7e68a3e1e00b6da23261c97a33027 100644
--- a/gpu/command_buffer/client/gles2_c_lib_autogen.h
+++ b/gpu/command_buffer/client/gles2_c_lib_autogen.h
@@ -1586,6 +1586,9 @@ GLenum GL_APIENTRY GLES2GetGraphicsResetStatusKHR() {
 void GL_APIENTRY GLES2BlendBarrierKHR() {
   gles2::GetGLContext()->BlendBarrierKHR();
 }
+void GL_APIENTRY GLES2ApplyScreenSpaceAntialiasingCHROMIUM() {
+  gles2::GetGLContext()->ApplyScreenSpaceAntialiasingCHROMIUM();
+}
 
 namespace gles2 {
 
@@ -2815,6 +2818,11 @@ extern const NameToFunc g_gles2_function_table[] = {
         reinterpret_cast<GLES2FunctionPointer>(glBlendBarrierKHR),
     },
     {
+        "glApplyScreenSpaceAntialiasingCHROMIUM",
+        reinterpret_cast<GLES2FunctionPointer>(
+            glApplyScreenSpaceAntialiasingCHROMIUM),
+    },
+    {
         NULL, NULL,
     },
 };