Add a full Blimp integration test.

blimp/client/test/compositor/BUILD.gn

Index: blimp/client/test/compositor/BUILD.gn
diff --git a/blimp/client/test/compositor/BUILD.gn b/blimp/client/test/compositor/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..03ce5bead35a8cf889ac1c5299a24e397f1f12c4
--- /dev/null
+++ b/blimp/client/test/compositor/BUILD.gn
@@ -0,0 +1,23 @@
+# Copyright 2016 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.
+
+source_set("compositor") {
+  testonly = true
+
+  sources = [
+    "mock_compositor_dependencies.cc",
+    "mock_compositor_dependencies.h",
+    "test_blimp_embedder_compositor.cc",
+    "test_blimp_embedder_compositor.h",
+  ]
+
+  deps = [
+    "//cc:test_support",
+  ]
+
+  public_deps = [
+    "//blimp/client/public:public_headers",
+    "//blimp/client/support/compositor",
+  ]
+}