Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/platform/mhtml/MHTMLParser.cpp

Index: Source/platform/mhtml/MHTMLParser.cpp
diff --git a/Source/platform/mhtml/MHTMLParser.cpp b/Source/platform/mhtml/MHTMLParser.cpp
index 36ad5b50f47a4948bc390fbe915c96e7e217ead3..d3158f4ea53e93f8ac1ee9fff300ef1a36696d7e 100644
--- a/Source/platform/mhtml/MHTMLParser.cpp
+++ b/Source/platform/mhtml/MHTMLParser.cpp
@@ -138,7 +138,7 @@ PassRefPtr<MIMEHeader> MIMEHeader::parseHeader(SharedBufferChunkReader* buffer)
             mimeHeader->m_endOfPartBoundary = parsedContentType.parameterValueForName("boundary");
             if (mimeHeader->m_endOfPartBoundary.isNull()) {
                 WTF_LOG_ERROR("No boundary found in multipart MIME header.");
-                return 0;
+                return nullptr;
             }
             mimeHeader->m_endOfPartBoundary.insert("--", 0);
             mimeHeader->m_endOfDocumentBoundary = mimeHeader->m_endOfPartBoundary;
@@ -204,7 +204,7 @@ PassRefPtr<MHTMLArchive> MHTMLParser::parseArchiveWithHeader(MIMEHeader* header)
 {
     if (!header) {
         WTF_LOG_ERROR("Failed to parse MHTML part: no header.");
-        return 0;
+        return nullptr;
     }
 
     RefPtr<MHTMLArchive> archive = MHTMLArchive::create();
@@ -213,7 +213,7 @@ PassRefPtr<MHTMLArchive> MHTMLParser::parseArchiveWithHeader(MIMEHeader* header)
         bool endOfArchiveReached = false;
         RefPtr<ArchiveResource> resource = parseNextPart(*header, String(), String(), endOfArchiveReached);
         if (!resource)
-            return 0;
+            return nullptr;
         archive->setMainResource(resource);
         return archive;
     }
@@ -226,14 +226,14 @@ PassRefPtr<MHTMLArchive> MHTMLParser::parseArchiveWithHeader(MIMEHeader* header)
         RefPtr<MIMEHeader> resourceHeader = MIMEHeader::parseHeader(&m_lineReader);
         if (!resourceHeader) {
             WTF_LOG_ERROR("Failed to parse MHTML, invalid MIME header.");
-            return 0;
+            return nullptr;
         }
         if (resourceHeader->contentType() == "multipart/alternative") {
             // Ignore IE nesting which makes little sense (IE seems to nest only some of the frames).
             RefPtr<MHTMLArchive> subframeArchive = parseArchiveWithHeader(resourceHeader.get());
             if (!subframeArchive) {
                 WTF_LOG_ERROR("Failed to parse MHTML subframe.");
-                return 0;
+                return nullptr;
             }
             bool endOfPartReached = skipLinesUntilBoundaryFound(m_lineReader, header->endOfPartBoundary());
             ASSERT_UNUSED(endOfPartReached, endOfPartReached);
@@ -247,7 +247,7 @@ PassRefPtr<MHTMLArchive> MHTMLParser::parseArchiveWithHeader(MIMEHeader* header)
         RefPtr<ArchiveResource> resource = parseNextPart(*resourceHeader, header->endOfPartBoundary(), header->endOfDocumentBoundary(), endOfArchive);
         if (!resource) {
             WTF_LOG_ERROR("Failed to parse MHTML part.");
-            return 0;
+            return nullptr;
         }
         addResourceToArchive(resource.get(), archive.get());
     }
@@ -290,20 +290,20 @@ PassRefPtr<ArchiveResource> MHTMLParser::parseNextPart(const MIMEHeader& mimeHea
     if (contentTransferEncoding == MIMEHeader::Binary) {
         if (!checkBoundary) {
             WTF_LOG_ERROR("Binary contents requires end of part");
-            return 0;
+            return nullptr;
         }
         m_lineReader.setSeparator(endOfPartBoundary.utf8().data());
         Vector<char> part;
         if (!m_lineReader.nextChunk(part)) {
             WTF_LOG_ERROR("Binary contents requires end of part");
-            return 0;
+            return nullptr;
         }
         content->append(part);
         m_lineReader.setSeparator("\r\n");
         Vector<char> nextChars;
         if (m_lineReader.peek(nextChars, 2) != 2) {
             WTF_LOG_ERROR("Invalid seperator.");
-            return 0;
+            return nullptr;
         }
         endOfPartReached = true;
         ASSERT(nextChars.size() == 2);
@@ -312,7 +312,7 @@ PassRefPtr<ArchiveResource> MHTMLParser::parseNextPart(const MIMEHeader& mimeHea
             String line = m_lineReader.nextChunkAsUTF8StringWithLatin1Fallback();
             if (!line.isEmpty()) {
                 WTF_LOG_ERROR("No CRLF at end of binary section.");
-                return 0;
+                return nullptr;
             }
         }
     } else {
@@ -333,7 +333,7 @@ PassRefPtr<ArchiveResource> MHTMLParser::parseNextPart(const MIMEHeader& mimeHea
     }
     if (!endOfPartReached && checkBoundary) {
         WTF_LOG_ERROR("No bounday found for MHTML part.");
-        return 0;
+        return nullptr;
     }
 
     Vector<char> data;
@@ -341,7 +341,7 @@ PassRefPtr<ArchiveResource> MHTMLParser::parseNextPart(const MIMEHeader& mimeHea
     case MIMEHeader::Base64:
         if (!base64Decode(content->data(), content->size(), data)) {
             WTF_LOG_ERROR("Invalid base64 content for MHTML part.");
-            return 0;
+            return nullptr;
         }
         break;
     case MIMEHeader::QuotedPrintable:
@@ -354,7 +354,7 @@ PassRefPtr<ArchiveResource> MHTMLParser::parseNextPart(const MIMEHeader& mimeHea
         break;
     default:
         WTF_LOG_ERROR("Invalid encoding for MHTML part.");
-        return 0;
+        return nullptr;
     }
     RefPtr<SharedBuffer> contentBuffer = SharedBuffer::adoptVector(data);
     // FIXME: the URL in the MIME header could be relative, we should resolve it if it is.