convert //gpu to std::unique_ptr

gpu/command_buffer/service/framebuffer_manager.h

Index: gpu/command_buffer/service/framebuffer_manager.h
diff --git a/gpu/command_buffer/service/framebuffer_manager.h b/gpu/command_buffer/service/framebuffer_manager.h
index b6a2af30cdd63d51de4b5f1d2d79b0c6c085ff17..bb0de013a807c5b251740072bfe69d96cdd1afd2 100644
--- a/gpu/command_buffer/service/framebuffer_manager.h
+++ b/gpu/command_buffer/service/framebuffer_manager.h
@@ -8,12 +8,12 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/gpu_export.h"
@@ -225,7 +225,7 @@ class GPU_EXPORT Framebuffer : public base::RefCounted<Framebuffer> {
   typedef base::hash_map<GLenum, scoped_refptr<Attachment> > AttachmentMap;
   AttachmentMap attachments_;
 
-  scoped_ptr<GLenum[]> draw_buffers_;
+  std::unique_ptr<GLenum[]> draw_buffers_;
 
   GLenum read_buffer_;