Add PDF printing support (issue #1478).

patch/patches/print_header_footer_1478.patch

@@ -0,0 +1,125 @@
+diff --git printing/renderer/print_web_view_helper.cc printing/renderer/print_web_view_helper.cc
+index cef7a95..f05255a 100644
+--- printing/renderer/print_web_view_helper.cc
++++ printing/renderer/print_web_view_helper.cc
+@@ -73,6 +73,7 @@ const double kMinDpi = 1.0;
+ bool g_is_preview_enabled_ = false;
+ #else
+ bool g_is_preview_enabled_ = true;
++#endif  // !defined(ENABLE_PRINT_PREVIEW)
+ 
+ const char kPageLoadScriptFormat[] =
+     "document.open(); document.write(%s); document.close();";
+@@ -87,7 +88,6 @@ void ExecuteScript(blink::WebFrame* frame,
+   std::string script = base::StringPrintf(script_format, json.c_str());
+   frame->executeScript(blink::WebString(base::UTF8ToUTF16(script)));
+ }
+-#endif  // !defined(ENABLE_PRINT_PREVIEW)
+ 
+ int GetDPI(const PrintMsg_Print_Params* print_params) {
+ #if defined(OS_MACOSX)
+@@ -484,7 +484,6 @@ blink::WebView* FrameReference::view() {
+   return view_;
+ }
+ 
+-#if defined(ENABLE_PRINT_PREVIEW)
+ // static - Not anonymous so that platform implementations can use it.
+ void PrintWebViewHelper::PrintHeaderAndFooter(
+     blink::WebCanvas* canvas,
+@@ -541,7 +540,6 @@ void PrintWebViewHelper::PrintHeaderAndFooter(
+   web_view->close();
+   frame->close();
+ }
+-#endif  // defined(ENABLE_PRINT_PREVIEW)
+ 
+ // static - Not anonymous so that platform implementations can use it.
+ float PrintWebViewHelper::RenderPageContent(blink::WebFrame* frame,
+diff --git printing/renderer/print_web_view_helper.h printing/renderer/print_web_view_helper.h
+index d040dbc..72dd76e 100644
+--- printing/renderer/print_web_view_helper.h
++++ printing/renderer/print_web_view_helper.h
+@@ -305,7 +305,6 @@ class PrintWebViewHelper
+       double* scale_factor,
+       PageSizeMargins* page_layout_in_points);
+ 
+-#if defined(ENABLE_PRINT_PREVIEW)
+   // Given the |device| and |canvas| to draw on, prints the appropriate headers
+   // and footers using strings from |header_footer_info| on to the canvas.
+   static void PrintHeaderAndFooter(blink::WebCanvas* canvas,
+@@ -315,7 +314,6 @@ class PrintWebViewHelper
+                                    float webkit_scale_factor,
+                                    const PageSizeMargins& page_layout_in_points,
+                                    const PrintMsg_Print_Params& params);
+-#endif  // defined(ENABLE_PRINT_PREVIEW)
+ 
+   bool GetPrintFrame(blink::WebLocalFrame** frame);
+ 
+diff --git printing/renderer/print_web_view_helper_linux.cc printing/renderer/print_web_view_helper_linux.cc
+index 79b82e9..8d1f6f4 100644
+--- printing/renderer/print_web_view_helper_linux.cc
++++ printing/renderer/print_web_view_helper_linux.cc
+@@ -169,7 +169,6 @@ void PrintWebViewHelper::PrintPageInternal(
+   MetafileSkiaWrapper::SetMetafileOnCanvas(*canvas, metafile);
+   skia::SetIsDraftMode(*canvas, is_print_ready_metafile_sent_);
+ 
+-#if defined(ENABLE_PRINT_PREVIEW)
+   if (params.params.display_header_footer) {
+     // |page_number| is 0-based, so 1 is added.
+     // TODO(vitalybuka) : why does it work only with 1.25?
+@@ -178,7 +177,6 @@ void PrintWebViewHelper::PrintPageInternal(
+                          scale_factor / 1.25, page_layout_in_points,
+                          params.params);
+   }
+-#endif  // defined(ENABLE_PRINT_PREVIEW)
+ 
+   RenderPageContent(frame, params.page_number, canvas_area, content_area,
+                     scale_factor, canvas);
+diff --git printing/renderer/print_web_view_helper_mac.mm printing/renderer/print_web_view_helper_mac.mm
+index 7aa503c..a6413be 100644
+--- printing/renderer/print_web_view_helper_mac.mm
++++ printing/renderer/print_web_view_helper_mac.mm
+@@ -125,14 +125,12 @@ void PrintWebViewHelper::RenderPage(const PrintMsg_Print_Params& params,
+     MetafileSkiaWrapper::SetMetafileOnCanvas(*canvas, metafile);
+     skia::SetIsDraftMode(*canvas, is_print_ready_metafile_sent_);
+     skia::SetIsPreviewMetafile(*canvas, is_preview);
+-#if defined(ENABLE_PRINT_PREVIEW)
+     if (params.display_header_footer) {
+       PrintHeaderAndFooter(static_cast<blink::WebCanvas*>(canvas),
+                            page_number + 1,
+                            print_preview_context_.total_page_count(), *frame,
+                            scale_factor, page_layout_in_points, params);
+     }
+-#endif  // defined(ENABLE_PRINT_PREVIEW)
+     RenderPageContent(frame, page_number, canvas_area, content_area,
+                       scale_factor, static_cast<blink::WebCanvas*>(canvas));
+   }
+diff --git printing/renderer/print_web_view_helper_pdf_win.cc printing/renderer/print_web_view_helper_pdf_win.cc
+index a121448..f2a1a0a 100644
+--- printing/renderer/print_web_view_helper_pdf_win.cc
++++ printing/renderer/print_web_view_helper_pdf_win.cc
+@@ -185,14 +185,12 @@ void PrintWebViewHelper::PrintPageInternal(
+   MetafileSkiaWrapper::SetMetafileOnCanvas(*canvas, metafile);
+   skia::SetIsDraftMode(*canvas, is_print_ready_metafile_sent_);
+ 
+-#if defined(ENABLE_PRINT_PREVIEW)
+   if (params.params.display_header_footer) {
+     // |page_number| is 0-based, so 1 is added.
+     PrintHeaderAndFooter(canvas, params.page_number + 1,
+                          print_preview_context_.total_page_count(), *frame,
+                          scale_factor, page_layout_in_points, params.params);
+   }
+-#endif  // defined(ENABLE_PRINT_PREVIEW)
+ 
+   float webkit_scale_factor =
+       RenderPageContent(frame, params.page_number, canvas_area, content_area,
+diff --git resources/printing_resources.grdp resources/printing_resources.grdp
+index 7213746..32b8b1e 100644
+--- resources/printing_resources.grdp
++++ resources/printing_resources.grdp
+@@ -1,6 +1,4 @@
+ <?xml version="1.0" encoding="utf-8"?>
+ <grit-part>
+-  <if expr="enable_print_preview">
+     <include name="IDR_PRINT_PREVIEW_PAGE" file="../printing/resources/print_preview_page.html" flattenhtml="true" allowexternalscript="false" type="BINDATA" />
+-  </if>
+ </grit-part>