make allocPixels throw on failure

src/pdf/SkPDFImage.cpp

 /*
  * Copyright 2010 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 "SkPDFImage.h"
 
 #include "SkBitmap.h"
@@ skipping 357 matching lines @@
         return SkPackARGB4444(SK_AlphaOPAQUE & 0x0F, 0, 0, 0);
     } else {
         return SkPackARGB4444(SK_AlphaOPAQUE & 0x0F,
                                    r / count, g / count, b / count);
     }
 }
 
 static SkBitmap unpremultiply_bitmap(const SkBitmap& bitmap,
                                      const SkIRect& srcRect) {
     SkBitmap outBitmap;
-    SkAssertResult(outBitmap.allocPixels(
-            bitmap.info().makeWH(srcRect.width(), srcRect.height())));
+    outBitmap.allocPixels(bitmap.info().makeWH(srcRect.width(), srcRect.height()));
     int dstRow = 0;
 
     SkAutoLockPixels outBitmapPixelLock(outBitmap);
     SkAutoLockPixels bitmapPixelLock(bitmap);
     switch (bitmap.colorType()) {
         case kARGB_4444_SkColorType: {
             for (int y = srcRect.fTop; y < srcRect.fBottom; y++) {
                 uint16_t* dst = outBitmap.getAddr16(0, dstRow);
                 uint16_t* src = bitmap.getAddr16(0, y);
                 for (int x = srcRect.fLeft; x < srcRect.fRight; x++) {
@@ skipping 320 matching lines @@
         SkPicture::EncodeBitmap encoder) {
     if (SkIRect::MakeWH(bitmap.width(), bitmap.height()) == subset) {
         SkAutoTUnref<SkData> encodedData(ref_encoded_data(bitmap));
         if (is_jfif_jpeg(encodedData)) {
             return SkNEW_ARGS(PDFJPEGImage,
                               (encodedData, bitmap.width(), bitmap.height()));
         }
     }
     return SkPDFImage::CreateImage(bitmap, subset, encoder);
 }