GLES1: glColor4(f|ub|x)

BUG=angleproject:2306

Change-Id: I4a57732d4c470c821a3847a7ee012cf3ccbba197
Reviewed-on: https://chromium-review.googlesource.com/986454
Commit-Queue: Lingfeng Yang <lfy@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/Context.cpp b/src/libANGLE/Context.cpp
index 64a0463..e7fdbab 100644
--- a/src/libANGLE/Context.cpp
+++ b/src/libANGLE/Context.cpp
@@ -6397,6 +6397,10 @@
                 *type      = GL_INT;
                 *numParams = 1;
                 return true;
+            case GL_CURRENT_COLOR:
+                *type      = GL_FLOAT;
+                *numParams = 4;
+                return true;
         }
     }