********** WebCore blob hacking

WebCore/fileapi/Blob.cpp

Index: WebCore/fileapi/Blob.cpp
===================================================================
--- WebCore/fileapi/Blob.cpp	(revision 140218)
+++ WebCore/fileapi/Blob.cpp	(working copy)
@@ -40,50 +40,14 @@
 
 namespace WebCore {
 
-namespace {
-
-// Used in histograms to see when we can actually deprecate the prefixed slice.
-enum SliceHistogramEnum {
-    SliceWithoutPrefix,
-    SliceWithPrefix,
-    SliceHistogramEnumMax,
-};
-
-} // namespace
-
-Blob::Blob()
-    : m_size(0)
+Blob::Blob(PassRefPtr<BlobDataHandle> dataHandle)
+    : m_blobDataHandle(dataHandle)
 {
-    OwnPtr<BlobData> blobData = BlobData::create();
-
-    // Create a new internal URL and register it with the provided blob data.
-    m_internalURL = BlobURL::createInternalURL();
-    ThreadableBlobRegistry::registerBlobURL(m_internalURL, blobData.release());
+    ASSERT(m_blobDataHandle);
 }
 
-Blob::Blob(PassOwnPtr<BlobData> blobData, long long size)
-    : m_type(blobData->contentType())
-    , m_size(size)
-{
-    ASSERT(blobData);
-
-    // Create a new internal URL and register it with the provided blob data.
-    m_internalURL = BlobURL::createInternalURL();
-    ThreadableBlobRegistry::registerBlobURL(m_internalURL, blobData);
-}
-
-Blob::Blob(const KURL& srcURL, const String& type, long long size)
-    : m_type(type)
-    , m_size(size)
-{
-    // Create a new internal URL and register it with the same blob data as the source URL.
-    m_internalURL = BlobURL::createInternalURL();
-    ThreadableBlobRegistry::registerBlobURL(0, m_internalURL, srcURL);
-}
-
 Blob::~Blob()
 {
-    ThreadableBlobRegistry::unregisterBlobURL(m_internalURL);
 }
 
 #if ENABLE(BLOB)
@@ -97,8 +61,8 @@
         // FIXME: This involves synchronous file operation. We need to figure out how to make it asynchronous.
         toFile(this)->captureSnapshot(size, modificationTime);
     } else {
-        ASSERT(m_size != -1);
-        size = m_size;
+        size = this->size();
+        ASSERT(size != -1);
     }
 
     // Convert the negative value that is used to select from the end.
@@ -126,14 +90,14 @@
     if (isFile()) {
 #if ENABLE(FILE_SYSTEM)
         if (!toFile(this)->fileSystemURL().isEmpty())
-            blobData->appendURL(toFile(this)->fileSystemURL(), start, length, modificationTime);
+            blobData->appendFileSystemURL(toFile(this)->fileSystemURL(), start, length, modificationTime);
         else
 #endif
         blobData->appendFile(toFile(this)->path(), start, length, modificationTime);
     } else
-        blobData->appendBlob(m_internalURL, start, length);
+        blobData->appendBlob(m_blobDataHandle, start, length);
 
-    return Blob::create(blobData.release(), length);
+    return Blob::create(BlobDataHandle::create(blobData.release(), length));
 }
 #endif