Remove dependency on VectorPlatformDeviceEmf.

skia/ext/platform_device_win.h

Index: skia/ext/platform_device_win.h
===================================================================
--- skia/ext/platform_device_win.h	(revision 95234)
+++ skia/ext/platform_device_win.h	(working copy)
@@ -52,6 +52,9 @@
   // Returns if GDI is allowed to render text to this device.
   virtual bool IsNativeFontRenderingAllowed() { return true; }
 
+  // Used by the printing subclasses.  See |VectorPlatformDeviceEmf|.
+  virtual bool AlphaBlendUsed() const { return false; }

[alokp, 2011/08/04 16:06:54]

Could you add a comment what it means?

[vandebo (ex-Chrome), 2011/08/04 16:28:44]

In case you aren't sure... Some printers don't support alpha blending, so in
those cases, we flatten the EMF before sending it to the printer.  This flag
helps us decide if we need to do that.

[Jeff Timanus, 2011/08/04 16:30:33]

Done.

+
   // Loads a SkPath into the GDI context. The path can there after be used for
   // clipping or as a stroke. Returns false if the path failed to be loaded.
   static bool LoadPathToDC(HDC context, const SkPath& path);