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

cc/layers/layer_client.h

Index: cc/layers/layer_client.h
diff --git a/cc/layers/layer_client.h b/cc/layers/layer_client.h
index fa33f92b13247b22b2deb1f52156bd077d1a878d..8f9310f2f4a49e5dff885e93cc8183ec8d6f18ad 100644
--- a/cc/layers/layer_client.h
+++ b/cc/layers/layer_client.h
@@ -5,7 +5,8 @@
 #ifndef CC_LAYERS_LAYER_CLIENT_H_
 #define CC_LAYERS_LAYER_CLIENT_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "cc/base/cc_export.h"
 
 namespace base {
@@ -27,8 +28,8 @@ class CC_EXPORT LayerClient {
   //
   // A pointer to the layer is provided for the convenience of layer clients
   // which service multiple layers.
-  virtual scoped_ptr<base::trace_event::ConvertableToTraceFormat> TakeDebugInfo(
-      Layer* layer) = 0;
+  virtual std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
+  TakeDebugInfo(Layer* layer) = 0;
 
  protected:
   virtual ~LayerClient() {}