Fix errors caused by unsafe conversions to/from size_t

third_party/WebKit/Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 522 matching lines @@
         cancelMainResourceLoad(ResourceError::cancelledError(m_request.url()));
         return;
     }
 
     if (length)
         m_state = DataReceived;
 
     m_writer->addData(bytes, length);
 }
 
-void DocumentLoader::dataReceived(Resource* resource, const char* data, unsigned length)
+void DocumentLoader::dataReceived(Resource* resource, const char* data, size_t length)
 {
     ASSERT(data);
     ASSERT(length);
     ASSERT_UNUSED(resource, resource == m_mainResource);
     ASSERT(!m_response.isNull());
     ASSERT(!mainResourceLoader() || !mainResourceLoader()->defersLoading());
 
     if (m_inDataReceived) {
         // If this function is reentered, defer processing of the additional
         // data to the top-level invocation. Reentrant calls can occur because
@@ skipping 11 matching lines @@
     RefPtrWillBeRawPtr<LocalFrame> protectFrame(m_frame.get());
     RefPtrWillBeRawPtr<DocumentLoader> protectLoader(this);
 
     TemporaryChange<bool> reentrancyProtector(m_inDataReceived, true);
     processData(data, length);
 
     // Process data received in reentrant invocations. Note that the
     // invocations of processData() may queue more data in reentrant
     // invocations, so iterate until it's empty.
     const char* segment;
-    unsigned pos = 0;
-    while (unsigned length = m_dataBuffer->getSomeData(segment, pos)) {
+    size_t pos = 0;
+    while (size_t length = m_dataBuffer->getSomeData(segment, pos)) {
         processData(segment, length);
         pos += length;
     }
     // All data has been consumed, so flush the buffer.
     m_dataBuffer->clear();
 }
 
-void DocumentLoader::processData(const char* data, unsigned length)
+void DocumentLoader::processData(const char* data, size_t length)
 {
     m_applicationCacheHost->mainResourceDataReceived(data, length);
     m_timeOfLastDataReceived = monotonicallyIncreasingTime();
 
     if (isArchiveMIMEType(response().mimeType()))
         return;
     commitIfReady();
     if (!frameLoader())
         return;
     commitData(data, length);
@@ skipping 249 matching lines @@
 {
     m_writer = createWriterFor(ownerDocument, init, mimeType(), m_writer ? m_writer->encoding() : emptyAtom, true, ForceSynchronousParsing);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 DEFINE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 } // namespace blink