fix more 64bit warnings

samplecode/SampleRotateCircles.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
@@ skipping 315 matching lines @@
     class MyClick : public Click {
     public:
         int fIndex;
         MyClick(SkView* target, int index) : Click(target), fIndex(index) {}
     };
 
     virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y,
                                               unsigned modi) SK_OVERRIDE {
         for (size_t i = 0; i < SK_ARRAY_COUNT(fPts); ++i) {
             if (hittest(fPts[i], x, y)) {
-                return new MyClick(this, i);
+                return new MyClick(this, (int)i);
             }
         }
         return this->INHERITED::onFindClickHandler(x, y, modi);
     }
 
     virtual bool onClick(Click* click) {
         int index = ((MyClick*)click)->fIndex;
         fPts[index].offset(SkIntToScalar(click->fICurr.fX - click->fIPrev.fX),
                            SkIntToScalar(click->fICurr.fY - click->fIPrev.fY));
         this->inval(NULL);
         return true;
     }
 
 private:
     typedef SkView INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static SkView* F0() { return new RotateCirclesView; }
 static SkViewRegister gR0(F0);
 static SkView* F1() { return new TestCirclesView; }
 static SkViewRegister gR1(F1);
 static SkView* F2() { return new TestStrokeView; }
 static SkViewRegister gR2(F2);