Remove most ScopedVector usage from c/b/extensions.

chrome/browser/extensions/api/developer_private/developer_private_api_unittest.cc

Index: chrome/browser/extensions/api/developer_private/developer_private_api_unittest.cc
diff --git a/chrome/browser/extensions/api/developer_private/developer_private_api_unittest.cc b/chrome/browser/extensions/api/developer_private/developer_private_api_unittest.cc
index 8e172c31eea8a665cdfa266b844a21ea8a670ce5..508c7db0c2583325f80475923f7bc6f55bb1992e 100644
--- a/chrome/browser/extensions/api/developer_private/developer_private_api_unittest.cc
+++ b/chrome/browser/extensions/api/developer_private/developer_private_api_unittest.cc
@@ -106,7 +106,7 @@ class DeveloperPrivateApiUnitTest : public ExtensionServiceTestBase {
   std::unique_ptr<TestBrowserWindow> browser_window_;
   std::unique_ptr<Browser> browser_;
 
-  ScopedVector<TestExtensionDir> test_extension_dirs_;
+  std::vector<std::unique_ptr<TestExtensionDir>> test_extension_dirs_;
 
   DISALLOW_COPY_AND_ASSIGN(DeveloperPrivateApiUnitTest);
 };
@@ -128,8 +128,8 @@ const Extension* DeveloperPrivateApiUnitTest::LoadUnpackedExtension() {
       " \"permissions\": [\"*://*/*\"]"
       "}";
 
-  test_extension_dirs_.push_back(new TestExtensionDir);
-  TestExtensionDir* dir = test_extension_dirs_.back();
+  test_extension_dirs_.push_back(base::MakeUnique<TestExtensionDir>());
+  TestExtensionDir* dir = test_extension_dirs_.back().get();
   dir->WriteManifest(kManifest);
 
   // TODO(devlin): We should extract out methods to load an unpacked extension