Revert changes made to ImageResource memory accounting at crrev.com/2337733002

third_party/WebKit/Source/platform/SharedBuffer.cpp

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 237 matching lines @@
 }
 
 void SharedBuffer::onMemoryDump(const String& dumpPrefix,
                                 WebProcessMemoryDump* memoryDump) const {
   if (m_buffer.size()) {
     WebMemoryAllocatorDump* dump =
         memoryDump->createMemoryAllocatorDump(dumpPrefix + "/shared_buffer");
     dump->addScalar("size", "bytes", m_buffer.size());
     memoryDump->addSuballocation(
         dump->guid(), String(WTF::Partitions::kAllocatedObjectPoolName));
-  }
-  if (m_segments.size()) {
+  } else {
     // If there is data in the segments, then it should have been allocated
     // using fastMalloc.
     const String dataDumpName = dumpPrefix + "/segments";
     auto dump = memoryDump->createMemoryAllocatorDump(dataDumpName);
-    dump->addScalar("size", "bytes", m_size - m_buffer.size());
+    dump->addScalar("size", "bytes", m_size);
     memoryDump->addSuballocation(
         dump->guid(), String(WTF::Partitions::kAllocatedObjectPoolName));
   }
 }
 
 }  // namespace blink