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

chrome/browser/extensions/requirements_checker_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 58 matching lines @@
       "      \"features\": [\"" + base::JoinString(features, "\", \"") + "\"]\n"
       "    }\n"
       "  ]\n"
       "}";
     gpu::GPUInfo gpu_info;
     content::GpuDataManager::GetInstance()->InitializeForTesting(
         json_blacklist, gpu_info);
   }
 
  protected:
-  scoped_ptr<RequirementsChecker> checker_;
+  std::unique_ptr<RequirementsChecker> checker_;
 };
 
 IN_PROC_BROWSER_TEST_F(RequirementsCheckerBrowserTest, CheckEmptyExtension) {
   scoped_refptr<const Extension> extension(
       LoadExtensionFromDirName("no_requirements"));
   ASSERT_TRUE(extension.get());
   checker_->Check(extension, base::Bind(
       &RequirementsCheckerBrowserTest::ValidateRequirementErrors,
       base::Unretained(this), std::vector<std::string>()));
   content::RunAllBlockingPoolTasksUntilIdle();
@@ skipping 67 matching lines @@
         IDS_EXTENSION_WEBGL_NOT_SUPPORTED));
   }
 
   checker_->Check(extension, base::Bind(
       &RequirementsCheckerBrowserTest::ValidateRequirementErrors,
       base::Unretained(this), expected_errors));
   content::RunAllBlockingPoolTasksUntilIdle();
 }
 
 }  // namespace extensions