add cast for tostring

src/effects/SkXfermodeImageFilter.cpp

 /*
  * Copyright 2013 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkXfermodeImageFilter.h"
 
 #include "SkCanvas.h"
@@ skipping 170 matching lines @@
 
     SkAutoCanvasRestore acr(canvas, true);
     canvas->clipRect(SkRect::Make(fgBounds), SkCanvas::kDifference_Op);
     paint.setColor(0);
     canvas->drawPaint(paint);
 }
 
 #ifndef SK_IGNORE_TO_STRING
 void SkXfermodeImageFilter_Base::toString(SkString* str) const {
     str->appendf("SkXfermodeImageFilter: (");
-    str->appendf("blendmode: (%d)", fMode);
+    str->appendf("blendmode: (%d)", (int)fMode);
     if (this->getInput(0)) {
         str->appendf("foreground: (");
         this->getInput(0)->toString(str);
         str->appendf(")");
     }
     if (this->getInput(1)) {
         str->appendf("background: (");
         this->getInput(1)->toString(str);
         str->appendf(")");
     }
@@ skipping 306 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkXfermodeImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkXfermodeImageFilter_Base)
     // manually register the legacy serialized name "SkXfermodeImageFilter"
     SkFlattenable::Register("SkXfermodeImageFilter", SkXfermodeImageFilter_Base::CreateProc,
                             SkFlattenable::kSkImageFilter_Type);
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkArithmeticImageFilter)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END