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

cc/test/proxy_impl_for_test.cc

Index: cc/test/proxy_impl_for_test.cc
diff --git a/cc/test/proxy_impl_for_test.cc b/cc/test/proxy_impl_for_test.cc
index da0848ba3bb5e4fa1ae9749f83cf5d51bec7a206..c6fa58623792790b542e5c3727e73d75a4f476df 100644
--- a/cc/test/proxy_impl_for_test.cc
+++ b/cc/test/proxy_impl_for_test.cc
@@ -4,14 +4,16 @@
 
 #include "cc/test/proxy_impl_for_test.h"
 
+#include "base/memory/ptr_util.h"
+
 namespace cc {
-scoped_ptr<ProxyImplForTest> ProxyImplForTest::Create(
+std::unique_ptr<ProxyImplForTest> ProxyImplForTest::Create(
     TestHooks* test_hooks,
     ChannelImpl* channel_impl,
     LayerTreeHost* layer_tree_host,
     TaskRunnerProvider* task_runner_provider,
-    scoped_ptr<BeginFrameSource> external_begin_frame_source) {
-  return make_scoped_ptr(new ProxyImplForTest(
+    std::unique_ptr<BeginFrameSource> external_begin_frame_source) {
+  return base::WrapUnique(new ProxyImplForTest(
       test_hooks, channel_impl, layer_tree_host, task_runner_provider,
       std::move(external_begin_frame_source)));
 }
@@ -29,7 +31,7 @@ ProxyImplForTest::ProxyImplForTest(
     ChannelImpl* channel_impl,
     LayerTreeHost* layer_tree_host,
     TaskRunnerProvider* task_runner_provider,
-    scoped_ptr<BeginFrameSource> external_begin_frame_source)
+    std::unique_ptr<BeginFrameSource> external_begin_frame_source)
     : ProxyImpl(channel_impl,
                 layer_tree_host,
                 task_runner_provider,