Request uncompressed images from data reduction proxy when saving.

chrome/browser/renderer_context_menu/render_view_context_menu.cc

Index: chrome/browser/renderer_context_menu/render_view_context_menu.cc
diff --git a/chrome/browser/renderer_context_menu/render_view_context_menu.cc b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
index fc76b17d38ab7b64bdcc0e9f4fc62b9689676ed9..e3210020b9d06ee514bd8219c047235b379b755f 100644
--- a/chrome/browser/renderer_context_menu/render_view_context_menu.cc
+++ b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
@@ -1310,7 +1310,6 @@ void RenderViewContextMenu::ExecuteCommand(int id, int event_flags) {
   if (command_executed_)
     return;
   command_executed_ = true;
-

[Avi (use Gerrit), 2015/03/06 23:55:20]

Why drop the space here?

[Not at Google. Contact bengr, 2015/03/07 00:45:02]

Done.

   RenderFrameHost* render_frame_host = GetRenderFrameHost();
 
   // Process extension menu items.
@@ -1390,7 +1389,17 @@ void RenderViewContextMenu::ExecuteCommand(int id, int event_flags) {
         RecordDownloadSource(DOWNLOAD_INITIATED_BY_CONTEXT_MENU);
         const GURL& url = params_.src_url;
         content::Referrer referrer = CreateSaveAsReferrer(url, params_);
-        source_web_contents_->SaveFrame(url, referrer);
+
+        std::string headers;
+        if (params_.media_type == WebContextMenuData::MediaTypeImage &&
+            !browser_context_->IsOffTheRecord() &&
+            DataReductionProxyChromeSettingsFactory::GetForBrowserContext(
+                browser_context_)->CanUseDataReductionProxy(
+                    params_.src_url)) {
+          headers = data_reduction_proxy::kDataReductionPassThroughHeader;
+        }
+
+        source_web_contents_->SaveFrameWithHeaders(url, referrer, headers);
       }
       break;
     }