[WIP] cc: Plumb SurfaceId from clients

cc/surfaces/display_unittest.cc

Index: cc/surfaces/display_unittest.cc
diff --git a/cc/surfaces/display_unittest.cc b/cc/surfaces/display_unittest.cc
index b17a63a03effb11b1ab63772c5372042c5594f19..a3cc6295f9aa21a92e00824f5792a66adbc0a90d 100644
--- a/cc/surfaces/display_unittest.cc
+++ b/cc/surfaces/display_unittest.cc
@@ -96,11 +96,9 @@ class TestDisplayScheduler : public DisplayScheduler {
 class DisplayTest : public testing::Test {
  public:
   DisplayTest()
-      : factory_(&manager_, &surface_factory_client_),
+      : factory_(kArbitraryClientId, &manager_, &surface_factory_client_),
         id_allocator_(kArbitraryClientId),
-        task_runner_(new base::NullTaskRunner) {
-    id_allocator_.RegisterSurfaceClientId(&manager_);
-  }
+        task_runner_(new base::NullTaskRunner) {}
 
   void SetUpDisplay(const RendererSettings& settings,
                     std::unique_ptr<TestWebGraphicsContext3D> context) {