[Experimental] Supporting OOPIF printing

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 d979333feb1fd72972fe4109e1afc061f49af2d1..d59c1fb93c5e8745a6631ed4521f16290b9a7bbe 100644
--- a/components/printing/renderer/print_web_view_helper.h
+++ b/components/printing/renderer/print_web_view_helper.h
@@ -175,11 +175,13 @@ class PrintWebViewHelper
   void DidFailProvisionalLoad(const blink::WebURLError& error) override;
   void DidFinishLoad() override;
   void ScriptedPrint(bool user_initiated) override;
+  void PrintFrame(const gfx::Rect& rect, int src_id) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // Message handlers ---------------------------------------------------------
 #if BUILDFLAG(ENABLE_BASIC_PRINTING)
   void OnPrintPages();
+  void OnPrintPagesWithSettings(const gfx::Rect& rect);
   void OnPrintForSystemDialog();
   void OnPrintForPrintPreview(const base::DictionaryValue& job_settings);
 #endif  // BUILDFLAG(ENABLE_BASIC_PRINTING)
@@ -319,7 +321,8 @@ class PrintWebViewHelper
   // Helper methods -----------------------------------------------------------
 
   bool CopyMetafileDataToSharedMem(const PdfMetafileSkia& metafile,
-                                   base::SharedMemoryHandle* shared_mem_handle);
+                                   base::SharedMemoryHandle* shared_mem_handle,
+                                   uint32_t* size);
 
   // Helper method to get page layout in points and fit to page if needed.
   static void ComputePageLayoutInPointsForCss(