Convert //extensions/{common,shell} from scoped_ptr to std::unique_ptr

extensions/common/features/base_feature_provider.h

Index: extensions/common/features/base_feature_provider.h
diff --git a/extensions/common/features/base_feature_provider.h b/extensions/common/features/base_feature_provider.h
index 0d6129234c1e77e9d3e9de3f593de28a5abf8de5..503371e05862518348487d5ece77d6be387e157e 100644
--- a/extensions/common/features/base_feature_provider.h
+++ b/extensions/common/features/base_feature_provider.h
@@ -6,10 +6,10 @@
 #define EXTENSIONS_COMMON_FEATURES_BASE_FEATURE_PROVIDER_H_
 
 #include <map>
+#include <memory>
 #include <string>
 #include <vector>
 
-#include "base/memory/scoped_ptr.h"
 #include "extensions/common/features/feature_provider.h"
 #include "extensions/common/features/simple_feature.h"
 
@@ -38,7 +38,7 @@ class BaseFeatureProvider : public FeatureProvider {
   const FeatureMap& GetAllFeatures() const override;
 
  private:
-  std::map<std::string, scoped_ptr<Feature>> features_;
+  std::map<std::string, std::unique_ptr<Feature>> features_;
 
   // Populated on first use.
   mutable std::vector<std::string> feature_names_;