Add support for EXT_sRGB.

BUG=angle:672

Change-Id: I001ff3dde7a39e545a535a399c02f3a6d91634c8
Reviewed-on: https://chromium-review.googlesource.com/203460
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libGLESv2/renderer/d3d11/Renderer11.h b/src/libGLESv2/renderer/d3d11/Renderer11.h
index e940599..490e190 100644
--- a/src/libGLESv2/renderer/d3d11/Renderer11.h
+++ b/src/libGLESv2/renderer/d3d11/Renderer11.h
@@ -123,6 +123,7 @@
     virtual bool getPostSubBufferSupport() const;
     virtual int getMaxRecommendedElementsIndices() const;
     virtual int getMaxRecommendedElementsVertices() const;
+    virtual bool getSRGBTextureSupport() const;
 
     virtual int getMajorShaderModel() const;
     virtual float getMaxPointSize() const;