Guard against most unintentionally ephemeral SkAutoFoo instantiations.

src/utils/mac/SkCreateCGImageRef.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 "SkCGUtils.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 156 matching lines @@
 public:
     SkAutoPDFRelease(CGPDFDocumentRef doc) : fDoc(doc) {}
     ~SkAutoPDFRelease() {
         if (fDoc) {
             CGPDFDocumentRelease(fDoc);
         }
     }
 private:
     CGPDFDocumentRef fDoc;
 };
+#define SkAutoPDFRelease(...) SK_REQUIRE_LOCAL_VAR(SkAutoPDFRelease)
 
 static void CGDataProviderReleaseData_FromMalloc(void*, const void* data,
                                                  size_t size) {
     sk_free((void*)data);
 }
 
 bool SkPDFDocumentToBitmap(SkStream* stream, SkBitmap* output) {
     size_t size = stream->getLength();
     void* ptr = sk_malloc_throw(size);
     stream->read(ptr, size);
@@ skipping 36 matching lines @@
     CGColorSpaceRelease(cs);
 
     if (ctx) {
         CGContextDrawPDFPage(ctx, page);
         CGContextRelease(ctx);
     }
 
     output->swap(bitmap);
     return true;
 }