Reusing base::IdType<...> to implement SurfaceId.

cc/surfaces/surface_factory_unittest.cc

Index: cc/surfaces/surface_factory_unittest.cc
diff --git a/cc/surfaces/surface_factory_unittest.cc b/cc/surfaces/surface_factory_unittest.cc
index fa05c2e93782bc357033857952717a0224e8022a..ae764ace46d855afb28201f8bbed3e93512fc55f 100644
--- a/cc/surfaces/surface_factory_unittest.cc
+++ b/cc/surfaces/surface_factory_unittest.cc
@@ -50,7 +50,8 @@ class TestSurfaceFactoryClient : public SurfaceFactoryClient {
 class SurfaceFactoryTest : public testing::Test {
  public:
   SurfaceFactoryTest()
-      : factory_(new SurfaceFactory(&manager_, &client_)), surface_id_(3) {
+      : factory_(new SurfaceFactory(&manager_, &client_)),
+        surface_id_(SurfaceId::FromUnsafeValue(3)) {
     factory_->Create(surface_id_);
   }
 
@@ -381,7 +382,7 @@ TEST_F(SurfaceFactoryTest, ResourceLifetime) {
 }
 
 TEST_F(SurfaceFactoryTest, BlankNoIndexIncrement) {
-  SurfaceId surface_id(6);
+  SurfaceId surface_id = SurfaceId::FromUnsafeValue(6);
   factory_->Create(surface_id);
   Surface* surface = manager_.GetSurfaceForId(surface_id);
   ASSERT_NE(nullptr, surface);
@@ -404,7 +405,7 @@ void DrawCallback(uint32* execute_count,
 
 // Tests doing a DestroyAll before shutting down the factory;
 TEST_F(SurfaceFactoryTest, DestroyAll) {
-  SurfaceId id(7);
+  SurfaceId id = SurfaceId::FromUnsafeValue(7);
   factory_->Create(id);
 
   scoped_ptr<DelegatedFrameData> frame_data(new DelegatedFrameData);
@@ -427,7 +428,7 @@ TEST_F(SurfaceFactoryTest, DestroyAll) {
 }
 
 TEST_F(SurfaceFactoryTest, DestroySequence) {
-  SurfaceId id2(5);
+  SurfaceId id2 = SurfaceId::FromUnsafeValue(5);
   factory_->Create(id2);
 
   manager_.RegisterSurfaceIdNamespace(0);
@@ -460,7 +461,7 @@ TEST_F(SurfaceFactoryTest, DestroySequence) {
 // Sequences to be ignored.
 TEST_F(SurfaceFactoryTest, InvalidIdNamespace) {
   uint32_t id_namespace = 9u;
-  SurfaceId id(5);
+  SurfaceId id = SurfaceId::FromUnsafeValue(5);
   factory_->Create(id);
 
   manager_.RegisterSurfaceIdNamespace(id_namespace);
@@ -479,7 +480,7 @@ TEST_F(SurfaceFactoryTest, InvalidIdNamespace) {
 }
 
 TEST_F(SurfaceFactoryTest, DestroyCycle) {
-  SurfaceId id2(5);
+  SurfaceId id2 = SurfaceId::FromUnsafeValue(5);
   factory_->Create(id2);
 
   manager_.RegisterSurfaceIdNamespace(0);