Start cleaning up 64bit Win warnings

src/gpu/GrIndexBuffer.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
 #ifndef GrIndexBuffer_DEFINED
 #define GrIndexBuffer_DEFINED
 
 #include "GrGeometryBuffer.h"
 
 class GrIndexBuffer : public GrGeometryBuffer {
 public:
     /**
      * Retrieves the maximum number of quads that could be rendered
      * from the index buffer (using kTriangles_GrPrimitiveType).
      * @return the maximum number of quads using full size of index buffer.
      */
     int maxQuads() const {
-        return this->sizeInBytes() / (sizeof(uint16_t) * 6);
+        return static_cast<int>(this->sizeInBytes() / (sizeof(uint16_t) * 6));
     }
 protected:
     GrIndexBuffer(GrGpu* gpu, bool isWrapped, size_t sizeInBytes, bool dynamic, bool cpuBacked)
         : INHERITED(gpu, isWrapped, sizeInBytes, dynamic, cpuBacked) {}
 private:
     typedef GrGeometryBuffer INHERITED;
 };
 
 #endif