convert //gpu to std::unique_ptr

gpu/command_buffer/service/program_manager.h

Index: gpu/command_buffer/service/program_manager.h
diff --git a/gpu/command_buffer/service/program_manager.h b/gpu/command_buffer/service/program_manager.h
index 1d0c99199571ef8fe2d7fb4253964f8b4cd9217c..05072deb3bd92e2cc22e745576d7a881ed1d6155 100644
--- a/gpu/command_buffer/service/program_manager.h
+++ b/gpu/command_buffer/service/program_manager.h
@@ -9,8 +9,10 @@
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <string>
 #include <vector>
+
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ -506,7 +508,7 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
   bool uniforms_cleared_;
 
   // Log info
-  scoped_ptr<std::string> log_info_;
+  std::unique_ptr<std::string> log_info_;
 
   // attribute-location binding map from glBindAttribLocation() calls.
   LocationMap bind_attrib_location_map_;