[Offline Pages] Generate MHTML header in the browser process.

third_party/WebKit/Source/web/WebFrameSerializer.cpp

Index: third_party/WebKit/Source/web/WebFrameSerializer.cpp
diff --git a/third_party/WebKit/Source/web/WebFrameSerializer.cpp b/third_party/WebKit/Source/web/WebFrameSerializer.cpp
index 8dd4fd826ff07edc13d1bf0c8f2067da67d865fd..a4724effaebb95fe26c51d14babdd3b6762304c2 100644
--- a/third_party/WebKit/Source/web/WebFrameSerializer.cpp
+++ b/third_party/WebKit/Source/web/WebFrameSerializer.cpp
@@ -346,29 +346,6 @@ bool FrameShouldBeSerializedAsMHTML(
 
 }  // namespace
 
-WebThreadSafeData WebFrameSerializer::GenerateMHTMLHeader(
-    const WebString& boundary,
-    WebLocalFrame* frame,
-    MHTMLPartsGenerationDelegate* delegate) {
-  TRACE_EVENT0("page-serialization", "WebFrameSerializer::generateMHTMLHeader");
-  DCHECK(frame);
-  DCHECK(delegate);
-
-  if (!FrameShouldBeSerializedAsMHTML(frame, delegate->CacheControlPolicy()))
-    return WebThreadSafeData();
-
-  WebLocalFrameImpl* web_local_frame_impl = ToWebLocalFrameImpl(frame);
-  DCHECK(web_local_frame_impl);
-
-  Document* document = web_local_frame_impl->GetFrame()->GetDocument();
-
-  RefPtr<RawData> buffer = RawData::Create();
-  MHTMLArchive::GenerateMHTMLHeader(boundary, document->title(),
-                                    document->SuggestedMIMEType(),
-                                    *buffer->MutableData());
-  return buffer.Release();
-}
-
 WebThreadSafeData WebFrameSerializer::GenerateMHTMLParts(
     const WebString& boundary,
     WebLocalFrame* web_frame,