Offline Pages: Use 'binary encoding' to create MHTML, instead of base64.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index dc86c9e9c37b322b6f879c96d79637bd9e93071f..66fd31f547da018ae6b7f07cdf7db31a1f36eb8d 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4933,8 +4933,8 @@ void RenderFrameImpl::OnSerializeAsMHTML(
 
   // Generate MHTML parts.
   if (success) {
-    data = WebFrameSerializer::generateMHTMLParts(mhtml_boundary, GetWebFrame(),
-                                                  false, &delegate);
+    data = WebFrameSerializer::generateMHTMLParts(
+        mhtml_boundary, GetWebFrame(), params.mhtml_binary_encoding, &delegate);
     // TODO(jcivelli): write the chunks in deferred tasks to give a chance to
     //                 the message loop to process other events.
     if (file.WriteAtCurrentPos(data.data(), data.size()) < 0) {