cef/patch/patches/print_header_footer_1478_1565.patch

diff --git chrome/browser/ui/BUILD.gn chrome/browser/ui/BUILD.gn
index b80097e3a61e..c93f1ade1676 100644
--- chrome/browser/ui/BUILD.gn
+++ chrome/browser/ui/BUILD.gn
@@ -894,6 +894,7 @@ jumbo_split_static_library("ui") {
     "//base:i18n",
     "//base/allocator:buildflags",
     "//cc/paint",
+    "//cef/libcef/features",
     "//chrome:extra_resources",
     "//chrome:resources",
     "//chrome:strings",
diff --git chrome/browser/ui/cocoa/applescript/tab_applescript.mm chrome/browser/ui/cocoa/applescript/tab_applescript.mm
index f0a489a0c3af..1bd1259e47e3 100644
--- chrome/browser/ui/cocoa/applescript/tab_applescript.mm
+++ chrome/browser/ui/cocoa/applescript/tab_applescript.mm
@@ -9,7 +9,7 @@
 #include "base/logging.h"
 #import "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
-#include "chrome/browser/printing/print_view_manager.h"
+#include "cef/libcef/features/features.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/ui/cocoa/applescript/apple_event_util.h"
@@ -27,6 +27,10 @@
 #include "content/public/browser/web_contents_delegate.h"
 #include "url/gurl.h"
 
+#if !BUILDFLAG(ENABLE_CEF)
+#include "chrome/browser/printing/print_view_manager.h"
+#endif
+
 using content::NavigationController;
 using content::NavigationEntry;
 using content::OpenURLParams;
@@ -233,11 +237,15 @@ void ResumeAppleEventAndSendReply(NSAppleEventManagerSuspensionID suspension_id,
 
 - (void)handlesPrintScriptCommand:(NSScriptCommand*)command {
   AppleScript::LogAppleScriptUMA(AppleScript::AppleScriptCommand::TAB_PRINT);
+#if !BUILDFLAG(ENABLE_CEF)
   bool initiated = printing::PrintViewManager::FromWebContents(webContents_)
                        ->PrintNow(webContents_->GetMainFrame());
   if (!initiated) {
     AppleScript::SetError(AppleScript::errInitiatePrinting);
   }
+#else
+  NOTIMPLEMENTED();
+#endif
 }
 
 - (void)handlesSaveScriptCommand:(NSScriptCommand*)command {
diff --git chrome/browser/ui/webui/settings/printing_handler.cc chrome/browser/ui/webui/settings/printing_handler.cc
index 8647b2daf9ea..b070ab3e4b86 100644
--- chrome/browser/ui/webui/settings/printing_handler.cc
+++ chrome/browser/ui/webui/settings/printing_handler.cc
@@ -6,9 +6,13 @@
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
-#include "chrome/browser/printing/printer_manager_dialog.h"
+#include "cef/libcef/features/features.h"
 #include "content/public/browser/web_ui.h"
 
+#if !BUILDFLAG(ENABLE_CEF)
+#include "chrome/browser/printing/printer_manager_dialog.h"
+#endif
+
 namespace settings {
 
 PrintingHandler::PrintingHandler() {}
@@ -27,7 +31,11 @@ void PrintingHandler::OnJavascriptAllowed() {}
 void PrintingHandler::OnJavascriptDisallowed() {}
 
 void PrintingHandler::HandleOpenSystemPrintDialog(const base::ListValue* args) {
+#if !BUILDFLAG(ENABLE_CEF)
   printing::PrinterManagerDialog::ShowPrinterManagerDialog();
+#else
+  NOTIMPLEMENTED();
+#endif
 }
 
 }  // namespace settings
diff --git chrome/common/chrome_utility_printing_messages.h chrome/common/chrome_utility_printing_messages.h
index f903429e25e4..cde2124fb18e 100644
--- chrome/common/chrome_utility_printing_messages.h
+++ chrome/common/chrome_utility_printing_messages.h
@@ -16,7 +16,7 @@
 
 #define IPC_MESSAGE_START ChromeUtilityPrintingMsgStart
 
-#if defined(OS_WIN) && BUILDFLAG(ENABLE_PRINT_PREVIEW)
+#if defined(OS_WIN)
 // Preview and Cloud Print messages.
 IPC_STRUCT_TRAITS_BEGIN(printing::PrinterCapsAndDefaults)
   IPC_STRUCT_TRAITS_MEMBER(printer_capabilities)
@@ -94,6 +94,6 @@ IPC_MESSAGE_CONTROL1(ChromeUtilityHostMsg_GetPrinterCapsAndDefaults_Failed,
 IPC_MESSAGE_CONTROL1(
   ChromeUtilityHostMsg_GetPrinterSemanticCapsAndDefaults_Failed,
   std::string /* printer name */)
-#endif  // defined(OS_WIN) && BUILDFLAG(ENABLE_PRINT_PREVIEW)
+#endif  // defined(OS_WIN)
 
 #endif  // CHROME_COMMON_CHROME_UTILITY_PRINTING_MESSAGES_H_
diff --git chrome/utility/printing_handler.h chrome/utility/printing_handler.h
index 006966fd1c58..db9cd49af2a4 100644
--- chrome/utility/printing_handler.h
+++ chrome/utility/printing_handler.h
@@ -11,7 +11,7 @@
 #include "build/build_config.h"
 #include "printing/buildflags/buildflags.h"
 
-#if !defined(OS_WIN) || !BUILDFLAG(ENABLE_PRINT_PREVIEW)
+#if !defined(OS_WIN)
 #error "Windows printing and print preview must be enabled"
 #endif
 
diff --git components/printing/common/print_messages.cc components/printing/common/print_messages.cc
index 18df7614a988..9f86016d3e68 100644
--- components/printing/common/print_messages.cc
+++ components/printing/common/print_messages.cc
@@ -140,7 +140,6 @@ PrintMsg_PrintFrame_Params::PrintMsg_PrintFrame_Params() {}
 
 PrintMsg_PrintFrame_Params::~PrintMsg_PrintFrame_Params() {}
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 PrintHostMsg_RequestPrintPreview_Params::
     PrintHostMsg_RequestPrintPreview_Params()
     : is_modifiable(false),
@@ -170,4 +169,3 @@ PrintHostMsg_SetOptionsFromDocument_Params::
 PrintHostMsg_SetOptionsFromDocument_Params::
     ~PrintHostMsg_SetOptionsFromDocument_Params() {
 }
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
diff --git components/printing/common/print_messages.h components/printing/common/print_messages.h
index d29bb6aedecd..db7110ce80be 100644
--- components/printing/common/print_messages.h
+++ components/printing/common/print_messages.h
@@ -86,7 +86,6 @@ struct PrintMsg_PrintFrame_Params {
   int document_cookie;
 };
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 struct PrintHostMsg_RequestPrintPreview_Params {
   PrintHostMsg_RequestPrintPreview_Params();
   ~PrintHostMsg_RequestPrintPreview_Params();
@@ -113,7 +112,6 @@ struct PrintHostMsg_SetOptionsFromDocument_Params {
   printing::DuplexMode duplex;
   printing::PageRanges page_ranges;
 };
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 #endif  // INTERNAL_COMPONENTS_PRINTING_COMMON_PRINT_MESSAGES_H_
 
@@ -212,7 +210,6 @@ IPC_STRUCT_TRAITS_BEGIN(printing::PageRange)
   IPC_STRUCT_TRAITS_MEMBER(to)
 IPC_STRUCT_TRAITS_END()
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 IPC_STRUCT_TRAITS_BEGIN(PrintHostMsg_RequestPrintPreview_Params)
   IPC_STRUCT_TRAITS_MEMBER(is_modifiable)
   IPC_STRUCT_TRAITS_MEMBER(webnode_only)
@@ -238,7 +235,6 @@ IPC_STRUCT_TRAITS_BEGIN(PrintHostMsg_SetOptionsFromDocument_Params)
   // Specifies page range to be printed.
   IPC_STRUCT_TRAITS_MEMBER(page_ranges)
 IPC_STRUCT_TRAITS_END()
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 IPC_STRUCT_TRAITS_BEGIN(printing::PageSizeMargins)
   IPC_STRUCT_TRAITS_MEMBER(content_width)
@@ -283,7 +279,6 @@ IPC_STRUCT_BEGIN(PrintHostMsg_DidPrintContent_Params)
   IPC_STRUCT_MEMBER(printing::ContentToProxyIdMap, subframe_content_info)
 IPC_STRUCT_END()
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 // Parameters to describe a rendered document.
 IPC_STRUCT_BEGIN(PrintHostMsg_DidPreviewDocument_Params)
   // Document's content including metafile data and subframe info.
@@ -319,7 +314,6 @@ IPC_STRUCT_BEGIN(PrintHostMsg_DidGetPreviewPageCount_Params)
   // Scaling % to fit to page
   IPC_STRUCT_MEMBER(int, fit_to_page_scaling)
 IPC_STRUCT_END()
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 // Parameters to describe a rendered page.
 IPC_STRUCT_BEGIN(PrintHostMsg_DidPrintDocument_Params)
@@ -355,20 +349,18 @@ IPC_STRUCT_END()
 
 // Messages sent from the browser to the renderer.
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 // Tells the RenderFrame to initiate print preview for the entire document.
 IPC_MESSAGE_ROUTED1(PrintMsg_InitiatePrintPreview, bool /* has_selection */)
-#endif
 
 // Tells the RenderFrame to initiate printing or print preview for a particular
 // node, depending on which mode the RenderFrame is in.
 IPC_MESSAGE_ROUTED0(PrintMsg_PrintNodeUnderContextMenu)
 
-#if BUILDFLAG(ENABLE_PRINTING)
 // Tells the RenderFrame to switch the CSS to print media type, renders every
 // requested pages and switch back the CSS to display media type.
 IPC_MESSAGE_ROUTED0(PrintMsg_PrintPages)
 
+#if BUILDFLAG(ENABLE_PRINTING)
 // Like PrintMsg_PrintPages, but using the print preview document's frame/node.
 IPC_MESSAGE_ROUTED0(PrintMsg_PrintForSystemDialog)
 #endif
@@ -383,13 +375,13 @@ IPC_MESSAGE_ROUTED1(PrintMsg_PrintingDone,
 // Tells the RenderFrame whether printing is enabled or not.
 IPC_MESSAGE_ROUTED1(PrintMsg_SetPrintingEnabled, bool /* enabled */)
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 // Tells the RenderFrame to switch the CSS to print media type, renders every
 // requested pages for print preview using the given |settings|. This gets
 // called multiple times as the user updates settings.
 IPC_MESSAGE_ROUTED1(PrintMsg_PrintPreview,
                     base::DictionaryValue /* settings */)
 
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 // Tells the RenderFrame that print preview dialog was closed.
 IPC_MESSAGE_ROUTED0(PrintMsg_ClosePrintPreviewDialog)
 #endif
@@ -455,7 +447,6 @@ IPC_MESSAGE_CONTROL3(PrintHostMsg_TempFileForPrintingWritten,
                      int /* page count */)
 #endif  // defined(OS_ANDROID)
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 // Asks the browser to do print preview.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_RequestPrintPreview,
                     PrintHostMsg_RequestPrintPreview_Params /* params */)
@@ -492,7 +483,6 @@ IPC_SYNC_MESSAGE_ROUTED1_1(PrintHostMsg_CheckForCancel,
 IPC_MESSAGE_ROUTED2(PrintHostMsg_MetafileReadyForPrinting,
                     PrintHostMsg_DidPreviewDocument_Params /* params */,
                     PrintHostMsg_PreviewIds /* ids */)
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 // This is sent when there are invalid printer settings.
 IPC_MESSAGE_ROUTED0(PrintHostMsg_ShowInvalidPrinterSettingsError)
@@ -501,7 +491,6 @@ IPC_MESSAGE_ROUTED0(PrintHostMsg_ShowInvalidPrinterSettingsError)
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PrintingFailed,
                     int /* document cookie */)
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 // Tell the browser print preview failed.
 IPC_MESSAGE_ROUTED2(PrintHostMsg_PrintPreviewFailed,
                     int /* document cookie */,
@@ -532,6 +521,5 @@ IPC_MESSAGE_ROUTED1(PrintHostMsg_ShowScriptedPrintPreview,
 IPC_MESSAGE_ROUTED2(PrintHostMsg_SetOptionsFromDocument,
                     PrintHostMsg_SetOptionsFromDocument_Params /* params */,
                     PrintHostMsg_PreviewIds /* ids */)
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 #endif  // COMPONENTS_PRINTING_COMMON_PRINT_MESSAGES_H_
diff --git components/printing/renderer/print_render_frame_helper.cc components/printing/renderer/print_render_frame_helper.cc
index 028de5baff30..9f218232052c 100644
--- components/printing/renderer/print_render_frame_helper.cc
+++ components/printing/renderer/print_render_frame_helper.cc
@@ -341,7 +341,6 @@ bool PrintingNodeOrPdfFrame(const blink::WebLocalFrame* frame,
   return plugin && plugin->SupportsPaginatedPrint();
 }
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 // Returns true if the current destination printer is PRINT_TO_PDF.
 bool IsPrintToPdfRequested(const base::DictionaryValue& job_settings) {
   bool print_to_pdf = false;
@@ -363,7 +362,6 @@ bool PrintingFrameHasPageSizeStyle(blink::WebLocalFrame* frame,
   }
   return frame_has_custom_page_size_style;
 }
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 #if BUILDFLAG(ENABLE_PRINTING)
 // Disable scaling when either:
@@ -418,7 +416,6 @@ MarginType GetMarginsForPdf(blink::WebLocalFrame* frame,
              : PRINTABLE_AREA_MARGINS;
 }
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 bool FitToPageEnabled(const base::DictionaryValue& job_settings) {
   bool fit_to_paper_size = false;
   if (!job_settings.GetBoolean(kSettingFitToPageEnabled, &fit_to_paper_size)) {
@@ -460,7 +457,6 @@ blink::WebPrintScalingOption GetPrintScalingOption(
   }
   return blink::kWebPrintScalingOptionFitToPrintableArea;
 }
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 // Helper function to scale and round an integer value with a double valued
 // scaling.
@@ -1023,10 +1019,8 @@ void PrintRenderFrameHelper::ScriptedPrint(bool user_initiated) {
     return;
 
   if (g_is_preview_enabled) {
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     print_preview_context_.InitWithFrame(web_frame);
     RequestPrintPreview(PRINT_PREVIEW_SCRIPTED);
-#endif
   } else {
     auto weak_this = weak_ptr_factory_.GetWeakPtr();
     web_frame->DispatchBeforePrintEvent();
@@ -1054,10 +1048,10 @@ bool PrintRenderFrameHelper::OnMessageReceived(const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(PrintRenderFrameHelper, message)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintPages, OnPrintPages)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintForSystemDialog, OnPrintForSystemDialog)
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     IPC_MESSAGE_HANDLER(PrintMsg_InitiatePrintPreview, OnInitiatePrintPreview)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintPreview, OnPrintPreview)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintingDone, OnPrintingDone)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     IPC_MESSAGE_HANDLER(PrintMsg_ClosePrintPreviewDialog,
                         OnClosePrintPreviewDialog)
 #endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
@@ -1139,7 +1133,6 @@ void PrintRenderFrameHelper::UpdateFrameMarginsCssInfo(
   ignore_css_margins_ = (margins_type != DEFAULT_MARGINS);
 }
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 void PrintRenderFrameHelper::OnPrintPreview(
     const base::DictionaryValue& settings) {
   if (ipc_nesting_level_ > 1)
@@ -1394,7 +1387,6 @@ int PrintRenderFrameHelper::GetFitToPageScaleFactor(
       printable_height / static_cast<double>(uniform_page_size.height);
   return static_cast<int>(100.0f * std::min(scale_width, scale_height));
 }
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 void PrintRenderFrameHelper::OnPrintingDone(bool success) {
   if (ipc_nesting_level_ > 1)
@@ -1409,7 +1401,6 @@ void PrintRenderFrameHelper::OnSetPrintingEnabled(bool enabled) {
   is_printing_enabled_ = enabled;
 }
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 void PrintRenderFrameHelper::OnInitiatePrintPreview(bool has_selection) {
   if (ipc_nesting_level_ > 1)
     return;
@@ -1420,7 +1411,9 @@ void PrintRenderFrameHelper::OnInitiatePrintPreview(bool has_selection) {
   // that instead.
   auto plugin = delegate_->GetPdfElement(frame);
   if (!plugin.IsNull()) {
+    force_print_preview_ = true;
     PrintNode(plugin);
+    force_print_preview_ = false;
     return;
   }
   print_preview_context_.InitWithFrame(frame);
@@ -1429,6 +1422,7 @@ void PrintRenderFrameHelper::OnInitiatePrintPreview(bool has_selection) {
                           : PRINT_PREVIEW_USER_INITIATED_ENTIRE_FRAME);
 }
 
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 void PrintRenderFrameHelper::OnClosePrintPreviewDialog() {
   print_preview_context_.source_frame()->DispatchAfterPrintEvent();
 }
@@ -1516,11 +1510,9 @@ void PrintRenderFrameHelper::PrintNode(const blink::WebNode& node) {
 
   print_node_in_progress_ = true;
 
-  if (g_is_preview_enabled) {
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
+  if (g_is_preview_enabled || force_print_preview_) {
     print_preview_context_.InitWithNode(node);
     RequestPrintPreview(PRINT_PREVIEW_USER_INITIATED_CONTEXT_NODE);
-#endif
   } else {
     // Make a copy of the node, in case RenderView::OnContextMenuClosed() resets
     // its |context_menu_node_|.
@@ -1596,13 +1588,11 @@ void PrintRenderFrameHelper::Print(blink::WebLocalFrame* frame,
 void PrintRenderFrameHelper::DidFinishPrinting(PrintingResult result) {
   int cookie =
       print_pages_params_ ? print_pages_params_->params.document_cookie : 0;
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   PrintHostMsg_PreviewIds ids;
   if (print_pages_params_) {
     ids.ui_id = print_pages_params_->params.preview_ui_id;
     ids.request_id = print_pages_params_->params.preview_request_id;
   }
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
   switch (result) {
     case OK:
       break;
@@ -1617,7 +1607,6 @@ void PrintRenderFrameHelper::DidFinishPrinting(PrintingResult result) {
       }
       break;
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     case FAIL_PREVIEW:
       if (!is_print_ready_metafile_sent_) {
         if (notify_browser_of_print_failure_) {
@@ -1635,7 +1624,6 @@ void PrintRenderFrameHelper::DidFinishPrinting(PrintingResult result) {
                                                                cookie, ids));
       print_preview_context_.Failed(false);
       break;
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
   }
   prep_frame_view_.reset();
   print_pages_params_.reset();
@@ -1807,7 +1795,6 @@ bool PrintRenderFrameHelper::CalculateNumberOfPages(blink::WebLocalFrame* frame,
   return true;
 }
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 bool PrintRenderFrameHelper::SetOptionsFromPdfDocument(
     PrintHostMsg_SetOptionsFromDocument_Params* options) {
   blink::WebLocalFrame* source_frame = print_preview_context_.source_frame();
@@ -1901,7 +1888,6 @@ bool PrintRenderFrameHelper::UpdatePrintSettings(
   print_preview_context_.set_error(PREVIEW_ERROR_INVALID_PRINTER_SETTINGS);
   return false;
 }
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 void PrintRenderFrameHelper::GetPrintSettingsFromUser(
     blink::WebLocalFrame* frame,
@@ -2058,7 +2044,6 @@ bool PrintRenderFrameHelper::CopyMetafileDataToReadOnlySharedMem(
   return true;
 }
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 void PrintRenderFrameHelper::ShowScriptedPrintPreview() {
   if (is_scripted_preview_delayed_) {
     is_scripted_preview_delayed_ = false;
@@ -2184,7 +2169,6 @@ bool PrintRenderFrameHelper::PreviewPageRendered(
   Send(new PrintHostMsg_DidPreviewPage(routing_id(), preview_page_params, ids));
   return true;
 }
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 PrintRenderFrameHelper::PrintPreviewContext::PrintPreviewContext() = default;
 
diff --git components/printing/renderer/print_render_frame_helper.h components/printing/renderer/print_render_frame_helper.h
index 947ab972c1ef..e3bb2c2efab4 100644
--- components/printing/renderer/print_render_frame_helper.h
+++ components/printing/renderer/print_render_frame_helper.h
@@ -149,10 +149,8 @@ class PrintRenderFrameHelper
     OK,
     FAIL_PRINT_INIT,
     FAIL_PRINT,
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     FAIL_PREVIEW,
     INVALID_SETTINGS,
-#endif
   };
 
   // These values are persisted to logs. Entries should not be renumbered and
@@ -188,9 +186,9 @@ class PrintRenderFrameHelper
   // Message handlers ---------------------------------------------------------
   void OnPrintPages();
   void OnPrintForSystemDialog();
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   void OnInitiatePrintPreview(bool has_selection);
   void OnPrintPreview(const base::DictionaryValue& settings);
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   void OnClosePrintPreviewDialog();
 #endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
   void OnPrintFrameContent(const PrintMsg_PrintFrame_Params& params);
@@ -206,7 +204,6 @@ class PrintRenderFrameHelper
   // Update |ignore_css_margins_| based on settings.
   void UpdateFrameMarginsCssInfo(const base::DictionaryValue& settings);
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   // Prepare frame for creating preview document.
   void PrepareFrameForPreviewDocument();
 
@@ -226,7 +223,6 @@ class PrintRenderFrameHelper
 
   // Helper method to calculate the scale factor for fit-to-page.
   int GetFitToPageScaleFactor(const gfx::Rect& printable_area_in_points);
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
   // Enable/Disable printing.
   void OnSetPrintingEnabled(bool enabled);
@@ -254,7 +250,6 @@ class PrintRenderFrameHelper
                               const blink::WebNode& node,
                               int* number_of_pages);
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   // Set options for print preset from source PDF document.
   bool SetOptionsFromPdfDocument(
       PrintHostMsg_SetOptionsFromDocument_Params* options);
@@ -265,7 +260,6 @@ class PrintRenderFrameHelper
   bool UpdatePrintSettings(blink::WebLocalFrame* frame,
                            const blink::WebNode& node,
                            const base::DictionaryValue& passed_job_settings);
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
   // Get final print settings from the user.
   // WARNING: |this| may be gone after this method returns.
@@ -350,7 +344,6 @@ class PrintRenderFrameHelper
   bool IsScriptInitiatedPrintAllowed(blink::WebLocalFrame* frame,
                                      bool user_initiated);
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   // Shows scripted print preview when options from plugin are available.
   void ShowScriptedPrintPreview();
 
@@ -369,7 +362,6 @@ class PrintRenderFrameHelper
   // Returns true if print preview should continue, false on failure.
   bool PreviewPageRendered(int page_number,
                            std::unique_ptr<PdfMetafileSkia> metafile);
-#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
   void SetPrintPagesParams(const PrintMsg_PrintPages_Params& settings);
 
@@ -523,6 +515,7 @@ class PrintRenderFrameHelper
   ScriptingThrottler scripting_throttler_;
 
   bool print_node_in_progress_ = false;
+  bool force_print_preview_ = false;
   PrintPreviewContext print_preview_context_;
   bool is_loading_ = false;
   bool is_scripted_preview_delayed_ = false;
diff --git components/printing_component_strings.grdp components/printing_component_strings.grdp
index f157cbaec42e..5e3c3caa2aa2 100644
--- components/printing_component_strings.grdp
+++ components/printing_component_strings.grdp
@@ -1,10 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <grit-part>
-  <if expr="enable_print_preview">
     <if expr="is_win">
       <message name="IDS_PRINT_PREVIEW_FRIENDLY_WIN_NETWORK_PRINTER_NAME" desc="Friendly name for a printer with a given name on a given server. This uses the same format as the Windows print dialog.">
         <ph name="PRINTER_NAME">$1<ex>HP LaserJet</ex></ph> on <ph name="SERVER_NAME">$2<ex>printserver</ex></ph>
       </message>
     </if>
-  </if>
 </grit-part>
diff --git components/pwg_encoder/BUILD.gn components/pwg_encoder/BUILD.gn
index 96ae254116a9..3697d6034300 100644
--- components/pwg_encoder/BUILD.gn
+++ components/pwg_encoder/BUILD.gn
@@ -4,8 +4,6 @@
 
 import("//printing/buildflags/buildflags.gni")
 
-assert(enable_print_preview)
-
 static_library("pwg_encoder") {
   sources = [
     "bitmap_image.cc",