Convert //extensions/{common,shell} from scoped_ptr to std::unique_ptr

extensions/shell/app/shell_main_delegate.h

Index: extensions/shell/app/shell_main_delegate.h
diff --git a/extensions/shell/app/shell_main_delegate.h b/extensions/shell/app/shell_main_delegate.h
index 335307ad45f4b0bdbbbf62b480abe9aafe6093a5..0fa018f6455210cd303155db310d82423a6a1076 100644
--- a/extensions/shell/app/shell_main_delegate.h
+++ b/extensions/shell/app/shell_main_delegate.h
@@ -5,9 +5,10 @@
 #ifndef EXTENSIONS_SHELL_APP_SHELL_MAIN_DELEGATE_H_
 #define EXTENSIONS_SHELL_APP_SHELL_MAIN_DELEGATE_H_
 
+#include <memory>
+
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "build/build_config.h"
 #include "content/public/app/content_main_delegate.h"
@@ -53,10 +54,10 @@ class ShellMainDelegate : public content::ContentMainDelegate {
   // process needs data from resources.pak.
   static bool ProcessNeedsResourceBundle(const std::string& process_type);
 
-  scoped_ptr<content::ContentClient> content_client_;
-  scoped_ptr<content::ContentBrowserClient> browser_client_;
-  scoped_ptr<content::ContentRendererClient> renderer_client_;
-  scoped_ptr<content::ContentUtilityClient> utility_client_;
+  std::unique_ptr<content::ContentClient> content_client_;
+  std::unique_ptr<content::ContentBrowserClient> browser_client_;
+  std::unique_ptr<content::ContentRendererClient> renderer_client_;
+  std::unique_ptr<content::ContentUtilityClient> utility_client_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellMainDelegate);
 };