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

third_party/WebKit/Source/platform/SharedBuffer.cpp

Index: third_party/WebKit/Source/platform/SharedBuffer.cpp
diff --git a/third_party/WebKit/Source/platform/SharedBuffer.cpp b/third_party/WebKit/Source/platform/SharedBuffer.cpp
index 5e2195e645d9fadf75430002ddc1295f52370842..f898cd14e4ccc48595c031d43af6bcefb8202701 100644
--- a/third_party/WebKit/Source/platform/SharedBuffer.cpp
+++ b/third_party/WebKit/Source/platform/SharedBuffer.cpp
@@ -255,13 +255,12 @@ void SharedBuffer::onMemoryDump(const String& dumpPrefix,
     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));
   }