Remove most ScopedVector usage from c/b/extensions.

chrome/browser/extensions/extension_management.cc

Index: chrome/browser/extensions/extension_management.cc
diff --git a/chrome/browser/extensions/extension_management.cc b/chrome/browser/extensions/extension_management.cc
index 6b926d7b03e41d625379e5902b1556778cce24e0..c7e5f4fa26978c31cc3e31cc5f39ddc9d25f58b0 100644
--- a/chrome/browser/extensions/extension_management.cc
+++ b/chrome/browser/extensions/extension_management.cc
@@ -10,6 +10,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
@@ -59,8 +60,10 @@ ExtensionManagement::ExtensionManagement(PrefService* pref_service)
   // before first call to Refresh(), so in order to resolve this, Refresh() must
   // be called in the initialization of ExtensionManagement.
   Refresh();
-  providers_.push_back(new StandardManagementPolicyProvider(this));
-  providers_.push_back(new PermissionsBasedManagementPolicyProvider(this));
+  providers_.push_back(
+      base::MakeUnique<StandardManagementPolicyProvider>(this));
+  providers_.push_back(
+      base::MakeUnique<PermissionsBasedManagementPolicyProvider>(this));
 }
 
 ExtensionManagement::~ExtensionManagement() {
@@ -79,9 +82,9 @@ void ExtensionManagement::RemoveObserver(Observer* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
-std::vector<ManagementPolicy::Provider*> ExtensionManagement::GetProviders()
-    const {
-  return providers_.get();
+const std::vector<std::unique_ptr<ManagementPolicy::Provider>>&
+ExtensionManagement::GetProviders() const {
+  return providers_;
 }
 
 bool ExtensionManagement::BlacklistedByDefault() const {