Expose Blimp dependencies to the embedder

blimp/client/support/BUILD.gn

Index: blimp/client/support/BUILD.gn
diff --git a/components/subresource_filter/core/common/flat/BUILD.gn b/blimp/client/support/BUILD.gn
similarity index 58%
copy from components/subresource_filter/core/common/flat/BUILD.gn
copy to blimp/client/support/BUILD.gn
index 195c0cd11e02c6f6711ae1150e1c73aaa52a374c..1977805f02cd80d437920e604649a01e6a91b4ea 100644
--- a/components/subresource_filter/core/common/flat/BUILD.gn
+++ b/blimp/client/support/BUILD.gn
@@ -2,10 +2,10 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//third_party/flatbuffers/flatbuffer.gni")
+source_set("support") {
+  visibility = [ "//blimp/client/*" ]
 
-flatbuffer("flatbuffer") {
-  sources = [
-    "rules.fbs",
+  public_deps = [
+    "//blimp/client/support/compositor",
   ]
 }