Request uncompressed images from data reduction proxy when saving.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 2e0e9661e18fb0fa900b1255b2f7b500a070de69..add07bbe28c84d317bb0771d75490c3d1a5172ac 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -305,6 +305,9 @@ class CONTENT_EXPORT WebContentsImpl
                 const base::FilePath& dir_path,
                 SavePageType save_type) override;
   void SaveFrame(const GURL& url, const Referrer& referrer) override;
+  void SaveFrameWithHeader(const GURL& url,
+                           const Referrer& referrer,
+                           const std::string& header) override;
   void GenerateMHTML(const base::FilePath& file,
                      const base::Callback<void(int64)>& callback) override;
   const std::string& GetContentsMimeType() const override;