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

extensions/browser/external_install_info.cc

Index: extensions/browser/external_install_info.cc
diff --git a/extensions/browser/external_install_info.cc b/extensions/browser/external_install_info.cc
index e6da3fa8a2c38dc7ddd3702f16798a366713cbe8..d37c0f38d14b2c7b0473ba930b71566f78ec7dea 100644
--- a/extensions/browser/external_install_info.cc
+++ b/extensions/browser/external_install_info.cc
@@ -18,7 +18,7 @@ ExternalInstallInfo::ExternalInstallInfo(const std::string& extension_id,
 
 ExternalInstallInfoFile::ExternalInstallInfoFile(
     const std::string& extension_id,
-    scoped_ptr<base::Version> version,
+    std::unique_ptr<base::Version> version,
     const base::FilePath& path,
     Manifest::Location crx_location,
     int creation_flags,
@@ -35,7 +35,7 @@ ExternalInstallInfoFile::~ExternalInstallInfoFile() {}
 ExternalInstallInfoUpdateUrl::ExternalInstallInfoUpdateUrl(
     const std::string& extension_id,
     const std::string& install_parameter,
-    scoped_ptr<GURL> update_url,
+    std::unique_ptr<GURL> update_url,
     Manifest::Location download_location,
     int creation_flags,
     bool mark_acknowledged)