Introducing gpu::CommandBufferId as a distinct, IdType<...>-based type.

content/common/cc_messages_unittest.cc

Index: content/common/cc_messages_unittest.cc
diff --git a/content/common/cc_messages_unittest.cc b/content/common/cc_messages_unittest.cc
index 35218e7dee79ea4798b5a1d08cf11c13369fd376..423bfffaa6ba935373855af743a7a6d74c48f9e8 100644
--- a/content/common/cc_messages_unittest.cc
+++ b/content/common/cc_messages_unittest.cc
@@ -617,10 +617,12 @@ TEST_F(CCMessagesTest, UnusedSharedQuadStates) {
 TEST_F(CCMessagesTest, Resources) {
   IPC::Message msg(1, 2, IPC::Message::PRIORITY_NORMAL);
   gfx::Size arbitrary_size(757, 1281);
-  gpu::SyncToken arbitrary_token1(gpu::CommandBufferNamespace::GPU_IO, 0, 0x123,
+  gpu::SyncToken arbitrary_token1(gpu::CommandBufferNamespace::GPU_IO, 0,
+                                  gpu::CommandBufferId::FromUnsafeValue(0x123),
                                   71234838);
   arbitrary_token1.SetVerifyFlush();
-  gpu::SyncToken arbitrary_token2(gpu::CommandBufferNamespace::GPU_IO, 0, 0x123,
+  gpu::SyncToken arbitrary_token2(gpu::CommandBufferNamespace::GPU_IO, 0,
+                                  gpu::CommandBufferId::FromUnsafeValue(0x123),
                                   53589793);
   arbitrary_token2.SetVerifyFlush();