Move download messages from Renderer to Frame filter.

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 1d26b1326a764f4285f91f994ac5953f9e826a1d..573048f964190e867e767ba2e8e135b8943a16a9 100644
--- a/chrome/browser/renderer_context_menu/render_view_context_menu.cc
+++ b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
@@ -1849,8 +1849,9 @@ void RenderViewContextMenu::ExecuteCommand(int id, int event_flags) {
       if (params_.media_type == WebContextMenuData::MediaTypeCanvas ||
           (params_.media_type == WebContextMenuData::MediaTypeImage &&
               is_large_data_url)) {
-        source_web_contents_->GetRenderViewHost()->SaveImageAt(
-          params_.x, params_.y);
+        RenderFrameHost* frame_host = GetRenderFrameHost();
+        if (frame_host)
+          frame_host->SaveImageAt(params_.x, params_.y);
       } else {
         RecordDownloadSource(DOWNLOAD_INITIATED_BY_CONTEXT_MENU);
         const GURL& url = params_.src_url;
@@ -2265,7 +2266,9 @@ void RenderViewContextMenu::EscapeAmpersands(base::string16* text) {
 // Controller functions --------------------------------------------------------
 
 void RenderViewContextMenu::CopyImageAt(int x, int y) {
-  source_web_contents_->GetRenderViewHost()->CopyImageAt(x, y);
+  RenderFrameHost* frame_host = GetRenderFrameHost();
+  if (frame_host)
+    frame_host->CopyImageAt(x, y);
 }
 
 void RenderViewContextMenu::LoadOriginalImage() {