Added GLES3 Capabilities to the Command Buffer

gpu/command_buffer/service/context_state_autogen.h

Index: gpu/command_buffer/service/context_state_autogen.h
diff --git a/gpu/command_buffer/service/context_state_autogen.h b/gpu/command_buffer/service/context_state_autogen.h
index fcae244ca8b86659ae36d40b78518d50611ddf1d..405addd68f6c0ad6c1683eeef8eabce4722a9272 100644
--- a/gpu/command_buffer/service/context_state_autogen.h
+++ b/gpu/command_buffer/service/context_state_autogen.h
@@ -32,6 +32,8 @@ struct EnableFlags {
   bool cached_scissor_test;
   bool stencil_test;
   bool cached_stencil_test;
+  bool rasterizer_discard;
+  bool cached_rasterizer_discard;
 };
 
 GLfloat blend_color_red;
@@ -150,6 +152,12 @@ inline void SetDeviceCapabilityState(GLenum cap, bool enable) {
         return;
       enable_flags.cached_stencil_test = enable;
       break;
+    case GL_RASTERIZER_DISCARD:
+      if (enable_flags.cached_rasterizer_discard == enable &&
+          !ignore_cached_state)
+        return;
+      enable_flags.cached_rasterizer_discard = enable;
+      break;
     default:
       NOTREACHED();
       return;