Convert //cc from scoped_ptr to std::unique_ptr.

cc/test/threaded_channel_for_test.cc

Index: cc/test/threaded_channel_for_test.cc
diff --git a/cc/test/threaded_channel_for_test.cc b/cc/test/threaded_channel_for_test.cc
index 468eec3b66a2cd5cd2a324a2688be67179cba738..ecfd5ca6ee18b22dc5f3cabf635d9900ad927c08 100644
--- a/cc/test/threaded_channel_for_test.cc
+++ b/cc/test/threaded_channel_for_test.cc
@@ -4,15 +4,16 @@
 
 #include "cc/test/threaded_channel_for_test.h"
 
+#include "base/memory/ptr_util.h"
 #include "cc/test/proxy_impl_for_test.h"
 
 namespace cc {
 
-scoped_ptr<ThreadedChannelForTest> ThreadedChannelForTest::Create(
+std::unique_ptr<ThreadedChannelForTest> ThreadedChannelForTest::Create(
     TestHooks* test_hooks,
     ProxyMain* proxy_main,
     TaskRunnerProvider* task_runner_provider) {
-  return make_scoped_ptr(
+  return base::WrapUnique(
       new ThreadedChannelForTest(test_hooks, proxy_main, task_runner_provider));
 }
 
@@ -24,12 +25,12 @@ ThreadedChannelForTest::ThreadedChannelForTest(
       test_hooks_(test_hooks),
       proxy_impl_for_test_(nullptr) {}
 
-scoped_ptr<ProxyImpl> ThreadedChannelForTest::CreateProxyImpl(
+std::unique_ptr<ProxyImpl> ThreadedChannelForTest::CreateProxyImpl(
     ChannelImpl* channel_impl,
     LayerTreeHost* layer_tree_host,
     TaskRunnerProvider* task_runner_provider,
-    scoped_ptr<BeginFrameSource> external_begin_frame_source) {
-  scoped_ptr<ProxyImplForTest> proxy_impl = ProxyImplForTest::Create(
+    std::unique_ptr<BeginFrameSource> external_begin_frame_source) {
+  std::unique_ptr<ProxyImplForTest> proxy_impl = ProxyImplForTest::Create(
       test_hooks_, channel_impl, layer_tree_host, task_runner_provider,
       std::move(external_begin_frame_source));
   proxy_impl_for_test_ = proxy_impl.get();