Moved StartPageForVectorCanvas from Metafile to PdfMetafileSkia.

Method is used only for PdfMetafileSkia.

Review URL: https://codereview.chromium.org/697373004

Cr-Commit-Position: refs/heads/master@{#302770}

printing/emf_win.cc

@@ -449,17 +449,6 @@ bool Emf::Record::SafePlayback(Emf::EnumerationContext* context) const {
   return res;
 }
 
-SkBaseDevice* Emf::StartPageForVectorCanvas(
-    const gfx::Size& page_size, const gfx::Rect& content_area,
-    const float& scale_factor) {
-  if (!StartPage(page_size, content_area, scale_factor))
-    return NULL;
-
-  return skia::VectorPlatformDeviceEmf::CreateDevice(page_size.width(),
-                                                     page_size.height(),
-                                                     true, hdc_);
-}
-
 bool Emf::StartPage(const gfx::Size& /*page_size*/,
                     const gfx::Rect& /*content_area*/,
                     const float& /*scale_factor*/) {

printing/emf_win.h

@@ -58,9 +58,6 @@ class PRINTING_EXPORT Emf : public Metafile {
   virtual bool InitFromData(const void* src_buffer,
                             uint32 src_buffer_size) override;
 
-  virtual SkBaseDevice* StartPageForVectorCanvas(
-      const gfx::Size& page_size, const gfx::Rect& content_area,
-      const float& scale_factor) override;
   // Inserts a custom GDICOMMENT records indicating StartPage/EndPage calls
   // (since StartPage and EndPage do not work in a metafile DC). Only valid
   // when hdc_ is non-NULL. |page_size|, |content_area|, and |scale_factor| are

printing/metafile.h

@@ -29,8 +29,6 @@ class Rect;
 class Size;
 }
 
-class SkBaseDevice;
-
 namespace printing {
 
 // This class plays metafiles from data stream (usually PDF or EMF).
@@ -111,13 +109,6 @@ class PRINTING_EXPORT Metafile : public MetafilePlayer {
   // Note: It should only be called from within the browser process.
   virtual bool InitFromData(const void* src_buffer, uint32 src_buffer_size) = 0;
 
-  // This method calls StartPage and then returns an appropriate
-  // VectorPlatformDevice implementation bound to the context created by
-  // StartPage or NULL on error.
-  virtual SkBaseDevice* StartPageForVectorCanvas(const gfx::Size& page_size,
-                                                 const gfx::Rect& content_area,
-                                                 const float& scale_factor) = 0;
-
   // Prepares a context for rendering a new page with the given |page_size|,
   // |content_area| and  a |scale_factor| to use for the drawing. The units are
   // in points (=1/72 in). Returns true on success.

printing/pdf_metafile_cg_mac.cc

@@ -143,13 +143,6 @@ bool PdfMetafileCg::InitFromData(const void* src_buffer,
   return true;
 }
 
-SkBaseDevice* PdfMetafileCg::StartPageForVectorCanvas(
-    const gfx::Size& page_size, const gfx::Rect& content_area,
-    const float& scale_factor) {
-  NOTIMPLEMENTED();
-  return NULL;
-}
-
 bool PdfMetafileCg::StartPage(const gfx::Size& page_size,
                               const gfx::Rect& content_area,
                               const float& scale_factor) {

printing/pdf_metafile_cg_mac.h

@@ -36,9 +36,6 @@ class PRINTING_EXPORT PdfMetafileCg : public Metafile {
   bool InitFromData(const void* src_buffer, uint32 src_buffer_size) override;
 
   // Not implemented on mac.
-  SkBaseDevice* StartPageForVectorCanvas(const gfx::Size& page_size,
-                                         const gfx::Rect& content_area,
-                                         const float& scale_factor) override;
   bool StartPage(const gfx::Size& page_size,
                  const gfx::Rect& content_area,
                  const float& scale_factor) override;

printing/pdf_metafile_skia.h

@@ -15,6 +15,8 @@
 #include <windows.h>
 #endif
 
+class SkBaseDevice;
+
 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 namespace base {
 struct FileDescriptor;
@@ -35,10 +37,6 @@ class PRINTING_EXPORT PdfMetafileSkia : public Metafile {
   bool Init() override;
   bool InitFromData(const void* src_buffer, uint32 src_buffer_size) override;
 
-  SkBaseDevice* StartPageForVectorCanvas(const gfx::Size& page_size,
-                                         const gfx::Rect& content_area,
-                                         const float& scale_factor) override;
-
   bool StartPage(const gfx::Size& page_size,
                  const gfx::Rect& content_area,
                  const float& scale_factor) override;
@@ -72,6 +70,12 @@ class PRINTING_EXPORT PdfMetafileSkia : public Metafile {
   // Return a new metafile containing just the current page in draft mode.
   scoped_ptr<PdfMetafileSkia> GetMetafileForCurrentPage();
 
+  // This method calls StartPage and then returns an appropriate
+  // VectorPlatformDevice implementation bound to the context created by
+  // StartPage or NULL on error.
+  SkBaseDevice* StartPageForVectorCanvas(const gfx::Size& page_size,
+                                         const gfx::Rect& content_area,
+                                         const float& scale_factor);
  private:
   scoped_ptr<PdfMetafileSkiaData> data_;