Moving extension code out of "components/" to avoid layering violations.

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 4020c65e6fa79de390e67fdc08849191ba757b8a..4c1ae4b5f8f30fb3f68baf6eff6def5518a5a483 100644
--- a/chrome/browser/renderer_context_menu/render_view_context_menu.cc
+++ b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
@@ -303,6 +303,17 @@ content::Referrer CreateSaveAsReferrer(
       content::Referrer(referring_url.GetAsReferrer(), params.referrer_policy));
 }
 
+content::WebContents* GetWebContentsToUse(content::WebContents* web_contents) {
+// If we're viewing in a MimeHandlerViewGuest, use its embedder WebContents.
+#if defined(ENABLE_EXTENSIONS)
+  WebContents* top_level_web_contents =
+      extensions::GuestViewBase::GetTopLevelWebContents(web_contents);

[lazyboy, 2015/05/05 05:16:16]

GuestViewBase is too broad for this, I'd only use
top_level_web_contents if |web_contents| is a MimeHandlerViewGuest.

i.e. guard this with "if (MimeHandlerViewGuest::FromWC(web_contents))"

[Deepak, 2015/05/05 06:28:22]

Done.

+  if (top_level_web_contents)
+    return top_level_web_contents;
+#endif
+  return web_contents;
+}
+
 bool g_custom_id_ranges_initialized = false;
 
 const int kSpellcheckRadioGroup = 1;
@@ -350,7 +361,8 @@ RenderViewContextMenu::RenderViewContextMenu(
                        base::Bind(MenuItemMatchesParams, params_)),
       protocol_handler_submenu_model_(this),
       protocol_handler_registry_(
-          ProtocolHandlerRegistryFactory::GetForBrowserContext(GetProfile())) {
+          ProtocolHandlerRegistryFactory::GetForBrowserContext(GetProfile())),
+      embedder_web_contents_(GetWebContentsToUse(source_web_contents_)) {
   if (!g_custom_id_ranges_initialized) {
     g_custom_id_ranges_initialized = true;
     SetContentCustomCommandIdRange(IDC_CONTENT_CONTEXT_CUSTOM_FIRST,