remove device::clear -- no longer called

src/device/xps/SkXPSDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef UNICODE
 #define UNICODE
 #endif
@@ skipping 1141 matching lines @@
             segmentTypes , segmentData, segmentStrokes),
         "Could not add segment data to quad.");
 
     // Set the closed and filled properties of the figure.
     HRM((*xpsQuad)->SetIsClosed(stroke), "Could not set quad close.");
     HRM((*xpsQuad)->SetIsFilled(fill), "Could not set quad fill.");
 
     return S_OK;
 }
 
-void SkXPSDevice::clear(SkColor color) {
-    //TODO: override this for XPS
-    SkDEBUGF(("XPS clear not yet implemented."));
-}
-
 void SkXPSDevice::drawPoints(const SkDraw& d, SkCanvas::PointMode mode,
                              size_t count, const SkPoint points[],
                              const SkPaint& paint) {
     //This will call back into the device to do the drawing.
     d.drawPoints(mode, count, points, paint, true);
 }
 
 void SkXPSDevice::drawVertices(const SkDraw&, SkCanvas::VertexMode,
                                int vertexCount, const SkPoint verts[],
                                const SkPoint texs[], const SkColor colors[],
@@ skipping 1097 matching lines @@
              IID_PPV_ARGS(&this->fXpsFactory)),
          "Could not create factory for layer.");
 
     HRVM(this->fXpsFactory->CreateCanvas(&this->fCurrentXpsCanvas),
          "Could not create canvas for layer.");
 }
 
 bool SkXPSDevice::allowImageFilter(const SkImageFilter*) {
     return false;
 }