change gpudevice and pdfdevice to inherit from basedevice

include/pdf/SkPDFDevice.h

Index: include/pdf/SkPDFDevice.h
diff --git a/include/pdf/SkPDFDevice.h b/include/pdf/SkPDFDevice.h
index e250a6de4f0658da5f887a30d38d9394d3e30753..c63c80f6ab6177e2ca324965b9c50c010d2e23f1 100644
--- a/include/pdf/SkPDFDevice.h
+++ b/include/pdf/SkPDFDevice.h
@@ -10,7 +10,7 @@
 #ifndef SkPDFDevice_DEFINED
 #define SkPDFDevice_DEFINED
 
-#include "SkBitmapDevice.h"
+#include "SkDevice.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
@@ -45,7 +45,7 @@ struct NamedDestination;
 
     The drawing context for the PDF backend.
 */
-class SkPDFDevice : public SkBitmapDevice {
+class SkPDFDevice : public SkBaseDevice {
 public:
     /** Create a PDF drawing context with the given width and height.
      *  72 points/in means letter paper is 612x792.
@@ -82,8 +82,8 @@ public:
                             size_t count, const SkPoint[],
                             const SkPaint& paint) SK_OVERRIDE;
     virtual void drawRect(const SkDraw&, const SkRect& r, const SkPaint& paint);
-    virtual void drawRRect(const SkDraw&, const SkRRect& rr,
-                           const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawOval(const SkDraw&, const SkRect& oval, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRRect(const SkDraw&, const SkRRect& rr, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPath(const SkDraw&, const SkPath& origpath,
                           const SkPaint& paint, const SkMatrix* prePathMatrix,
                           bool pathIsMutable) SK_OVERRIDE;
@@ -208,6 +208,7 @@ public:
     }
 
 protected:
+    virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE;
     virtual bool allowImageFilter(const SkImageFilter*) SK_OVERRIDE;
 
 private:
@@ -248,6 +249,8 @@ private:
     SkPicture::EncodeBitmap fEncoder;
     SkScalar fRasterDpi;
 
+    SkBitmap fLegacyBitmap;
+
     SkPDFDevice(const SkISize& layerSize, const SkClipStack& existingClipStack,
                 const SkRegion& existingClipRegion);
 
@@ -323,7 +326,7 @@ private:
     void defineNamedDestination(SkData* nameData, const SkPoint& point,
                                 const SkMatrix& matrix);
 
-    typedef SkBitmapDevice INHERITED;
+    typedef SkBaseDevice INHERITED;
 
     // TODO(edisonn): Only SkDocument_PDF and SkPDFImageShader should be able to create
     // an SkPDFDevice