ImageResource: Reset the encoded image size after receiving all data

third_party/WebKit/Source/core/fetch/ImageResourceTest.cpp

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 347 matching lines @@
   Persistent<MockImageResourceClient> client =
       new MockImageResourceClient(cachedImage);
 
   // Send the image response.
   Vector<unsigned char> jpeg = jpegImage();
   cachedImage->responseReceived(
       ResourceResponse(KURL(), "image/jpeg", jpeg.size(), nullAtom, String()),
       nullptr);
   cachedImage->appendData(reinterpret_cast<const char*>(jpeg.data()),
                           jpeg.size());
+  EXPECT_NE(0u, cachedImage->encodedSize());
   cachedImage->finish();
+  EXPECT_EQ(0u, cachedImage->encodedSize());
   EXPECT_FALSE(cachedImage->errorOccurred());
   ASSERT_TRUE(cachedImage->hasImage());
   EXPECT_FALSE(cachedImage->getImage()->isNull());
   EXPECT_EQ(2, client->imageChangedCount());
   EXPECT_TRUE(client->notifyFinishedCalled());
   EXPECT_TRUE(cachedImage->getImage()->isBitmapImage());
 }
 
 TEST(ImageResourceTest, ReloadIfLoFi) {
   KURL testURL(ParsedURLString, "http://www.test.com/cancelTest.html");
@@ skipping 306 matching lines @@
       nullptr, WrappedResourceResponse(ResourceResponse(
                    testURL, "image/jpeg", 18, nullAtom, String())),
       nullptr);
   cachedImage->loader()->didReceiveData(nullptr, "notactuallyanimage", 18, 18,
                                         18);
   EXPECT_EQ(Resource::DecodeError, cachedImage->getStatus());
   EXPECT_FALSE(cachedImage->isLoading());
 }
 
 }  // namespace blink