fix more 64bit warnings

src/ports/SkImageDecoder_CG.cpp

 /*
  * Copyright 2008 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 "SkCGUtils.h"
 #include "SkColorPriv.h"
 #include "SkImageDecoder.h"
@@ skipping 48 matching lines @@
         return false;
     }
     SkAutoTCallVProc<const void, CFRelease> arsrc(imageSrc);
 
     CGImageRef image = CGImageSourceCreateImageAtIndex(imageSrc, 0, NULL);
     if (NULL == image) {
         return false;
     }
     SkAutoTCallVProc<CGImage, CGImageRelease> arimage(image);
 
-    const int width = CGImageGetWidth(image);
-    const int height = CGImageGetHeight(image);
+    const int width = SkToInt(CGImageGetWidth(image));
+    const int height = SkToInt(CGImageGetHeight(image));
     bm->setConfig(SkBitmap::kARGB_8888_Config, width, height);
     if (SkImageDecoder::kDecodeBounds_Mode == mode) {
         return true;
     }
 
     if (!this->allocPixelRef(bm, NULL)) {
         return false;
     }
 
     bm->lockPixels();
@@ skipping 205 matching lines @@
 
     SkAutoTCallVProc<const void, CFRelease> arsrc(imageSrc);
     const CFStringRef name = CGImageSourceGetType(imageSrc);
     if (NULL == name) {
         return SkImageDecoder::kUnknown_Format;
     }
     return UTType_to_Format(name);
 }
 
 static SkImageDecoder_FormatReg gFormatReg(get_format_cg);