Convert //extensions/browser/api from scoped_ptr to std::unique_ptr

extensions/browser/api/declarative/rules_cache_delegate.h

Index: extensions/browser/api/declarative/rules_cache_delegate.h
diff --git a/extensions/browser/api/declarative/rules_cache_delegate.h b/extensions/browser/api/declarative/rules_cache_delegate.h
index 15553dab75cb3d0e3201a5ec7d16b80ecffd9fa8..f9cca0b8af457f9fc5d91278ed659060e789180b 100644
--- a/extensions/browser/api/declarative/rules_cache_delegate.h
+++ b/extensions/browser/api/declarative/rules_cache_delegate.h
@@ -5,11 +5,11 @@
 #ifndef EXTENSIONS_BROWSER_API_DECLARATIVE_RULES_CACHE_DELEGATE_H__
 #define EXTENSIONS_BROWSER_API_DECLARATIVE_RULES_CACHE_DELEGATE_H__
 
+#include <memory>
 #include <set>
 #include <string>
 
 #include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "content/public/browser/browser_thread.h"
 
@@ -42,7 +42,7 @@ class RulesCacheDelegate {
   void Init(RulesRegistry* registry);
 
   void WriteToStorage(const std::string& extension_id,
-                      scoped_ptr<base::Value> value);
+                      std::unique_ptr<base::Value> value);
 
   base::WeakPtr<RulesCacheDelegate> GetWeakPtr() {
     DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
@@ -69,7 +69,7 @@ class RulesCacheDelegate {
   // Read/write a list of rules serialized to Values.
   void ReadFromStorage(const std::string& extension_id);
   void ReadFromStorageCallback(const std::string& extension_id,
-                               scoped_ptr<base::Value> value);
+                               std::unique_ptr<base::Value> value);
 
   // Check the preferences whether the extension with |extension_id| has some
   // rules stored on disk. If this information is not in the preferences, true