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

chrome/browser/ui/webui/print_preview/print_preview_distiller.h

Index: chrome/browser/ui/webui/print_preview/print_preview_distiller.h
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_distiller.h b/chrome/browser/ui/webui/print_preview/print_preview_distiller.h
index aef2cea6cb6f8b5dc857f5a5769b1004abc190a7..5e76849d8775f4d1c1cedacbbeb63d1b326d55ec 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_distiller.h
+++ b/chrome/browser/ui/webui/print_preview/print_preview_distiller.h
@@ -5,10 +5,11 @@
 #ifndef CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_DISTILLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_DISTILLER_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/feature_list.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/values.h"
 #include "content/public/browser/web_contents_observer.h"
@@ -27,7 +28,7 @@ class PrintPreviewDistiller {
 
   PrintPreviewDistiller(content::WebContents* source_web_contents,
                         base::Closure on_failed_callback,
-                        scoped_ptr<base::DictionaryValue> settings);
+                        std::unique_ptr<base::DictionaryValue> settings);
   ~PrintPreviewDistiller();
 
  private:
@@ -39,7 +40,7 @@ class PrintPreviewDistiller {
   void CreateDestinationWebContents(
       content::SessionStorageNamespace* session_storage_namespace,
       content::WebContents* source_web_contents,
-      scoped_ptr<base::DictionaryValue> settings,
+      std::unique_ptr<base::DictionaryValue> settings,
       base::Closure on_failed_callback);
 
   content::WebContents* CreateWebContents(
@@ -47,9 +48,9 @@ class PrintPreviewDistiller {
       content::WebContents* source_web_contents);
 
   // The distilled rendered WebContents; may be null.
-  scoped_ptr<content::WebContents> web_contents_;
+  std::unique_ptr<content::WebContents> web_contents_;
 
-  scoped_ptr<WebContentsDelegateImpl> web_contents_delegate_;
+  std::unique_ptr<WebContentsDelegateImpl> web_contents_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewDistiller);
 };