add SK_OVERRIDE, move subclass impls of virtuals into .cpp



git-svn-id: http://skia.googlecode.com/svn/trunk@2823 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/device/xps/SkXPSDevice.h b/include/device/xps/SkXPSDevice.h
index 2ba20f0..c948a90 100644
--- a/include/device/xps/SkXPSDevice.h
+++ b/include/device/xps/SkXPSDevice.h
@@ -67,9 +67,7 @@
     virtual bool endSheet();
     virtual bool endPortfolio();
 
-    virtual uint32_t getDeviceCapabilities() SK_OVERRIDE {
-        return kVector_Capability;
-    }
+    virtual uint32_t getDeviceCapabilities() SK_OVERRIDE;
 
 protected:
     virtual void clear(SkColor color) SK_OVERRIDE;
@@ -144,9 +142,7 @@
     virtual bool onReadPixels(const SkBitmap& bitmap,
                               int x,
                               int y,
-                              SkCanvas::Config8888) SK_OVERRIDE {
-        return false;
-    }
+                              SkCanvas::Config8888) SK_OVERRIDE;
 
 private:
     class TypefaceUse : ::SkNoncopyable {