Move SharedBitmapManager implementation out of content/

components/display_compositor/interfaces/BUILD.gn

Index: components/display_compositor/interfaces/BUILD.gn
diff --git a/components/display_compositor/interfaces/BUILD.gn b/components/display_compositor/interfaces/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..5ad377eb5604b09d263be35fd802d20da26eeb85
--- /dev/null
+++ b/components/display_compositor/interfaces/BUILD.gn
@@ -0,0 +1,16 @@
+# Copyright 2017 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//mojo/public/tools/bindings/mojom.gni")
+import("//testing/test.gni")
+
+mojom("interfaces") {
+  sources = [
+    "shared_bitmap_manager.mojom",
+  ]
+
+  deps = [
+    "//gpu/ipc/common:interfaces",
+  ]
+}