Update use of SkCanvas and SkDevice to match change in Skia

skia/ext/vector_platform_device_linux.h

Index: skia/ext/vector_platform_device_linux.h
diff --git a/skia/ext/vector_platform_device_linux.h b/skia/ext/vector_platform_device_linux.h
index 016edbd4aa7957a15578df719f9348b6ebf91c05..0a2bb83573f7cde8809c8ce2feb3325d56fd80dd 100644
--- a/skia/ext/vector_platform_device_linux.h
+++ b/skia/ext/vector_platform_device_linux.h
@@ -12,6 +12,15 @@
 
 namespace skia {
 
+class SkVectorPlatformDeviceFactory : public SkRasterDeviceFactory {
+ public:
+  virtual SkDevice* newDevice(SkBitmap::Config config, int width, int height,
+                              bool isOpaque, bool isForLayer);
+
+  static SkDevice* CreateDevice(cairo_t* context, int width, int height,
+                                bool isOpaque);
+};
+
 // This device is basically a wrapper that provides a surface for SkCanvas
 // to draw into. It is basically an adaptor which converts skia APIs into
 // cooresponding Cairo APIs and outputs to a Cairo surface. Please NOTE that
@@ -24,6 +33,10 @@ class VectorPlatformDevice : public PlatformDevice {
                                       int width, int height);
   virtual ~VectorPlatformDevice();
 
+  virtual SkDeviceFactory* getDeviceFactory() {
+    return SkNEW(SkVectorPlatformDeviceFactory);
+  }
+
   virtual bool IsVectorial() { return true; }
   virtual PlatformSurface beginPlatformPaint() { return context_; }