Mark WEBGL_compressed_texture_s3tc_srgb as draft

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
index 09f31eeae7a31f7bc5ce9328faa7c17ec80ad4ac..4c6645e94263872608742c9d4f46c4c4dc47c502 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
@@ -98,6 +98,10 @@ ImageBitmap* WebGL2RenderingContext::transferToImageBitmap(ExceptionState& excep
 
 void WebGL2RenderingContext::registerContextExtensions()
 {
+    // TODO(kainino): add DraftExtension flag to some of these before WebGL 2
+    // is rolled out.
+    // https://bugs.chromium.org/p/chromium/issues/detail?id=647892
+
     // Register extensions.
     registerExtension<EXTColorBufferFloat>(m_extColorBufferFloat);
     registerExtension<EXTDisjointTimerQuery>(m_extDisjointTimerQuery);