Convert a few components from scoped_ptr to std::unique_ptr

components/printing/renderer/print_web_view_helper.h

Index: components/printing/renderer/print_web_view_helper.h
diff --git a/components/printing/renderer/print_web_view_helper.h b/components/printing/renderer/print_web_view_helper.h
index 39ef8588c796358cdf78a8b1cbe41846d0222f54..7232b229a656f65bdc36d86e843d12510dba58d7 100644
--- a/components/printing/renderer/print_web_view_helper.h
+++ b/components/printing/renderer/print_web_view_helper.h
@@ -5,12 +5,12 @@
 #ifndef COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 
+#include <memory>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
@@ -108,7 +108,7 @@ class PrintWebViewHelper
   };
 
   PrintWebViewHelper(content::RenderView* render_view,
-                     scoped_ptr<Delegate> delegate);
+                     std::unique_ptr<Delegate> delegate);
   ~PrintWebViewHelper() override;
 
   // Disable print preview and switch to system dialog printing even if full
@@ -364,10 +364,10 @@ class PrintWebViewHelper
   void SetPrintPagesParams(const PrintMsg_PrintPages_Params& settings);
 
   // WebView used only to print the selection.
-  scoped_ptr<PrepareFrameAndViewForPrint> prep_frame_view_;
+  std::unique_ptr<PrepareFrameAndViewForPrint> prep_frame_view_;
   bool reset_prep_frame_view_;
 
-  scoped_ptr<PrintMsg_PrintPages_Params> print_pages_params_;
+  std::unique_ptr<PrintMsg_PrintPages_Params> print_pages_params_;
   bool is_print_ready_metafile_sent_;
   bool ignore_css_margins_;
 
@@ -382,7 +382,7 @@ class PrintWebViewHelper
   bool print_for_preview_;
 
   // Used to check the prerendering status.
-  const scoped_ptr<Delegate> delegate_;
+  const std::unique_ptr<Delegate> delegate_;
 
   // Keeps track of the state of print preview between messages.
   // TODO(vitalybuka): Create PrintPreviewContext when needed and delete after
@@ -466,8 +466,8 @@ class PrintWebViewHelper
     FrameReference source_frame_;
     blink::WebNode source_node_;
 
-    scoped_ptr<PrepareFrameAndViewForPrint> prep_frame_view_;
-    scoped_ptr<PdfMetafileSkia> metafile_;
+    std::unique_ptr<PrepareFrameAndViewForPrint> prep_frame_view_;
+    std::unique_ptr<PdfMetafileSkia> metafile_;
 
     // Total page count in the renderer.
     int total_page_count_;