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 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebFrameSerializer_h
 #define WebFrameSerializer_h
 
 #include "../platform/WebCommon.h"
-#include "../platform/WebData.h"
 #include "../platform/WebString.h"
+#include "../platform/WebThreadSafeData.h"
 #include "../platform/WebURL.h"
 #include "../platform/WebVector.h"
 #include "WebFrameSerializerCacheControlPolicy.h"
 
 namespace blink {
 
 class WebFrameSerializerClient;
 class WebFrame;
 class WebLocalFrame;
 template <typename T>
@@ skipping 23 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 WebThreadSafeData 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(const WebString& boundary,
-                                                 WebLocalFrame*,
-                                                 MHTMLPartsGenerationDelegate*);
+  BLINK_EXPORT static WebThreadSafeData 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 WebThreadSafeData 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 36 matching lines @@
   // 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