Move MHTML file writing out of the renderer main thread.

third_party/WebKit/public/web/WebFrameSerializer.h

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #ifndef WebFrameSerializer_h
 #define WebFrameSerializer_h
 
 #include "../platform/WebCommon.h"
 #include "../platform/WebData.h"
 #include "../platform/WebString.h"
 #include "../platform/WebURL.h"
 #include "../platform/WebVector.h"
 #include "WebFrameSerializerCacheControlPolicy.h"
+#include <vector>
 
 namespace blink {
 
 class WebFrameSerializerClient;
 class WebFrame;
 class WebLocalFrame;
 template <typename T> class WebVector;
 
 // Serialization of frame contents into html or mhtml.
 class WebFrameSerializer {
@@ skipping 19 matching lines @@
 
     // Generates and returns an MHTML header.
     //
     // Contents of the header (i.e. title and mime type) will be based
     // on the frame passed as an argument (which typically should be
     // the main, top-level frame).
     //
     // Same |boundary| needs to used for all generateMHTMLHeader and
     // generateMHTMLParts and generateMHTMLFooter calls that belong to the same
     // MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
-    BLINK_EXPORT static WebData generateMHTMLHeader(
+    BLINK_EXPORT static std::vector<char> generateMHTMLHeader(
         const WebString& boundary, WebLocalFrame*, MHTMLPartsGenerationDelegate*);
 
     // Generates and returns MHTML parts for the given frame and the
     // savable resources underneath.
     //
     // Same |boundary| needs to used for all generateMHTMLHeader and
     // generateMHTMLParts and generateMHTMLFooter calls that belong to the same
     // MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
-    BLINK_EXPORT static WebData generateMHTMLParts(
+    BLINK_EXPORT static std::vector<char> generateMHTMLParts(
         const WebString& boundary, WebLocalFrame*, MHTMLPartsGenerationDelegate*);
 
     // Generates and returns an MHTML footer.
     //
     // Same |boundary| needs to used for all generateMHTMLHeader and
     // generateMHTMLParts and generateMHTMLFooter calls that belong to the same
     // MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
-    BLINK_EXPORT static WebData generateMHTMLFooter(const WebString& boundary);
+    BLINK_EXPORT static std::vector<char> generateMHTMLFooter(const WebString& boundary);
 
     // IMPORTANT:
     // The API below is an older implementation of frame serialization that
     // will be removed soon.
 
     class LinkRewritingDelegate {
     public:
         // Method allowing the delegate control which URLs are written into the
         // generated html document.
         //
@@ skipping 35 matching lines @@
     BLINK_EXPORT static WebString generateMetaCharsetDeclaration(const WebString& charset);
     // Generate the MOTW declaration.
     BLINK_EXPORT static WebString generateMarkOfTheWebDeclaration(const WebURL&);
     // Generate the default base tag declaration.
     BLINK_EXPORT static WebString generateBaseTagDeclaration(const WebString& baseTarget);
 };
 
 } // namespace blink
 
 #endif