Delete blink::WebGraphicsContext3D and cc_blink::ContextProviderWebContext

content/browser/compositor/image_transport_factory.h

Index: content/browser/compositor/image_transport_factory.h
diff --git a/content/browser/compositor/image_transport_factory.h b/content/browser/compositor/image_transport_factory.h
index e272c4d5bc41ec2714ce50c619a7e40812bf896a..d16b14bb55b074609839c7ab1d13525c89f5be8d 100644
--- a/content/browser/compositor/image_transport_factory.h
+++ b/content/browser/compositor/image_transport_factory.h
@@ -31,10 +31,6 @@ class ContextFactory;
 class Texture;
 }
 
-namespace blink {
-class WebGraphicsContext3D;
-}
-
 namespace display_compositor {
 class GLHelper;
 }