Unfork VectorPlatformCanvas.

printing/native_metafile.h

Index: printing/native_metafile.h
diff --git a/printing/native_metafile.h b/printing/native_metafile.h
index 65f9f4c85863d2e2cad06cbd05b05a2c32c35ab2..a6e161d8e17fa9460d0a5353174ad5c70e398cd0 100644
--- a/printing/native_metafile.h
+++ b/printing/native_metafile.h
@@ -26,6 +26,10 @@ class Size;
 class Point;
 }
 
+namespace skia {
+class PlatformDevice;
+}
+
 #if defined(OS_CHROMEOS)
 namespace base {
 class  FileDescriptor;
@@ -50,6 +54,13 @@ class NativeMetafile {
   // Note: It should only be called from within the browser process.
   virtual bool Init(const void* src_buffer, uint32 src_buffer_size) = 0;
 
+  // This method calls StartPage and then returns an appropriate
+  // VectorPlatformDevice implemenation bound to the context created by

[Lei Zhang, 2011/03/17 19:42:46]

nit: typo.

[vandebo (ex-Chrome), 2011/03/17 19:53:43]

Done.

+  // StartPage or NULL on error.
+  virtual skia::PlatformDevice* StartPageForVectorCanvas(
+      const gfx::Size& page_size, const gfx::Point& content_origin,
+      const float& scale_factor) = 0;

[Lei Zhang, 2011/03/17 19:42:46]

Why add scale_factor if it's going to go unused?

[vandebo (ex-Chrome), 2011/03/17 19:53:43]

Two fold, one to make a uniform interface across platforms (Mac uses it)
(dpapad@ is changing StartPage() to be uniform across platforms and it will have
this same signature).  And because it could be used in some of the
implementations even though it isn't now.  Where we'd want to use it is to
squish one size document into another size, which we'll eventually need to do.

+
 #if defined(OS_WIN)
   // Inserts a custom GDICOMMENT records indicating StartPage/EndPage calls
   // (since StartPage and EndPage do not work in a metafile DC). Only valid