Add ability to wire up sharelist in glcontext creation

src/gpu/GrContextFactory.h

Index: src/gpu/GrContextFactory.h
diff --git a/src/gpu/GrContextFactory.h b/src/gpu/GrContextFactory.h
index 7afa3108c69d8984e0d63cd76350570dc764d4be..ecd0aa0cb792012604d8327d4ff8b117ec371778 100644
--- a/src/gpu/GrContextFactory.h
+++ b/src/gpu/GrContextFactory.h
@@ -120,7 +120,8 @@ public:
      * Get a context initialized with a type of GL context. It also makes the GL context current.
      */
     ContextInfo getContextInfo(GLContextType type,
-                               GLContextOptions options = kNone_GLContextOptions);
+                               GLContextOptions options = kNone_GLContextOptions,
+                               SkGLContext* shareList = nullptr);

[bsalomon, 2016/01/19 22:00:57]

Does this really need to be part of GrContextFactory? I don't think our other
tools need it and the implementation in the cpp doesn't really work correctly.

[joshualitt, 2016/01/20 14:36:56]

Acknowledged.

     /**
      * Get a GrContext initialized with a type of GL context. It also makes the GL context current.
      */