Migrate WTF::Vector::prepend() to ::push_front()

third_party/WebKit/Source/core/loader/resource/MultipartImageResourceParser.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/loader/resource/MultipartImageResourceParser.h"
 
 #include "platform/network/HTTPParsers.h"
 #include "wtf/NotFound.h"
 #include "wtf/text/WTFString.h"
 
 #include <algorithm>
 
 namespace blink {
 
 MultipartImageResourceParser::MultipartImageResourceParser(
     const ResourceResponse& response,
     const Vector<char>& boundary,
     Client* client)
     : m_originalResponse(response), m_boundary(boundary), m_client(client) {
   // Some servers report a boundary prefixed with "--".  See
   // https://crbug.com/5786.
   if (m_boundary.size() < 2 || m_boundary[0] != '-' || m_boundary[1] != '-')
-    m_boundary.prepend("--", 2);
+    m_boundary.push_front("--", 2);
 }
 
 void MultipartImageResourceParser::appendData(const char* bytes, size_t size) {
   DCHECK(!isCancelled());
   // m_sawLastBoundary means that we've already received the final boundary
   // token. The server should stop sending us data at this point, but if it
   // does, we just throw it away.
   if (m_sawLastBoundary)
     return;
   m_data.append(bytes, size);
 
   if (m_isParsingTop) {
     // Eat leading \r\n
     size_t pos = skippableLength(m_data, 0);
     // +2 for "--"
     if (m_data.size() < m_boundary.size() + 2 + pos) {
       // We don't have enough data yet to make a boundary token.  Just wait
       // until the next chunk of data arrives.
       return;
     }
     if (pos)
       m_data.remove(0, pos);
 
     // Some servers don't send a boundary token before the first chunk of
     // data.  We handle this case anyway (Gecko does too).
     if (0 != memcmp(m_data.data(), m_boundary.data(), m_boundary.size())) {
-      m_data.prepend("\n", 1);
+      m_data.push_front("\n", 1);
       m_data.prependVector(m_boundary);
     }
     m_isParsingTop = false;
   }
 
   // Headers
   if (m_isParsingHeaders) {
     if (!parseHeaders()) {
       // Get more data before trying again.
       return;
@@ skipping 117 matching lines @@
     }
   }
   return boundaryPosition;
 }
 
 DEFINE_TRACE(MultipartImageResourceParser) {
   visitor->trace(m_client);
 }
 
 }  // namespace blink