[blimp] Add SkPicture caching support.

blimp/test/BUILD.gn

Index: blimp/test/BUILD.gn
diff --git a/blimp/test/BUILD.gn b/blimp/test/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..0802b66ef63e3f1503511a122e2b393c8ef7a709
--- /dev/null
+++ b/blimp/test/BUILD.gn
@@ -0,0 +1,21 @@
+# 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("support") {
+  testonly = true
+
+  sources = [
+    "support/compositor/picture_cache_test_support.cc",
+    "support/compositor/picture_cache_test_support.h",
+  ]
+
+  deps = [
+    "//blimp/common",
+    "//cc",
+    "//skia",
+    "//testing/gmock",
+    "//ui/gfx",
+    "//ui/gfx/geometry",
+  ]
+}