Some linked_ptr -> unique_ptr conversion in extensions/browser.

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 9f425f57445b17dc110c3530babf849ffaea4c11..a17ad0e3bb86eb0357c1ae5c68fcf1c852f04a81 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -174,10 +174,9 @@ void ExtensionService::ClearProvidersForTesting() {
 }
 
 void ExtensionService::AddProviderForTesting(
-    ExternalProviderInterface* test_provider) {
+    std::unique_ptr<ExternalProviderInterface> test_provider) {
   CHECK(test_provider);
-  external_extension_providers_.push_back(
-      linked_ptr<ExternalProviderInterface>(test_provider));
+  external_extension_providers_.push_back(std::move(test_provider));
 }
 
 void ExtensionService::BlacklistExtensionForTest(