fix (some) 64bit warnings -- size_t -> int

src/core/SkEdgeBuilder.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.
  */
 #include "SkEdgeBuilder.h"
 #include "SkPath.h"
 #include "SkEdge.h"
@@ skipping 132 matching lines @@
                     }
                     break;
                 default:
                     SkDEBUGFAIL("unexpected verb");
                     break;
             }
         }
     }
     SkASSERT((char*)edge <= (char*)fEdgeList);
     SkASSERT(edgePtr - fEdgeList <= maxEdgeCount);
-    return edgePtr - fEdgeList;
+    return SkToInt(edgePtr - fEdgeList);
 }
 
 static void handle_quad(SkEdgeBuilder* builder, const SkPoint pts[3]) {
     SkPoint monoX[5];
     int n = SkChopQuadAtYExtrema(pts, monoX);
     for (int i = 0; i <= n; i++) {
         builder->addQuad(&monoX[i * 2]);
     }
 }
 
@@ skipping 107 matching lines @@
                 }
                 default:
                     SkDEBUGFAIL("unexpected verb");
                     break;
             }
         }
     }
     fEdgeList = fList.begin();
     return fList.count();
 }