Fix wrong type for GL_STENCIL_INDEX8.

This was stored as DEPTH_STENCIL when it should be STENCIL.

BUG=angleproject:1228

Change-Id: I34c226a273cf962e83a040630bedbefa0f9ee382
Reviewed-on: https://chromium-review.googlesource.com/362623
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
diff --git a/src/libANGLE/formatutils.cpp b/src/libANGLE/formatutils.cpp
index c78f76e..4b5c140 100644
--- a/src/libANGLE/formatutils.cpp
+++ b/src/libANGLE/formatutils.cpp
@@ -581,8 +581,8 @@
     // - Multisampled buffer are disallowed for non-normalized integer component types and we want to support it for STENCIL_INDEX8
     // - All other stencil formats (all depth-stencil) are either float or normalized
     // - It affects only validation of internalformat in RenderbufferStorageMultisample.
-    //                               | Internal format  |                  |D |S |X | Format          | Type            | Component type        | Supported   | Renderable  | Filterable   |
-    map.insert(InternalFormatInfoPair(GL_STENCIL_INDEX8, DepthStencilFormat(0, 8, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, RequireES<2>, RequireES<2>, NeverSupported)));
+    //                               | Internal format  |                  |D |S |X | Format    | Type            | Component type        | Supported   | Renderable  | Filterable   |
+    map.insert(InternalFormatInfoPair(GL_STENCIL_INDEX8, DepthStencilFormat(0, 8, 0, GL_STENCIL, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, RequireES<2>, RequireES<2>, NeverSupported)));
 
     // From GL_ANGLE_lossy_etc_decode
     map.insert(InternalFormatInfoPair(GL_ETC1_RGB8_LOSSY_DECODE_ANGLE, CompressedFormat(4, 4, 64, 3, GL_ETC1_RGB8_OES, GL_UNSIGNED_BYTE, false, RequireExt<&Extensions::lossyETCDecode>, NeverSupported, AlwaysSupported)));