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 6946015097b93dacbf13a47ebc89046237c42918..de266679b536831787dc525be1deaed2f9550929 100644
--- a/chrome/browser/renderer_context_menu/render_view_context_menu.cc
+++ b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
@@ -113,6 +113,10 @@
 #endif  // defined(ENABLE_PRINT_PREVIEW)
 #endif  // defined(ENABLE_PRINTING)
 
+#if defined(ENABLE_EXTENSIONS)
+#include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
+#endif
+
 using base::UserMetricsAction;
 using blink::WebContextMenuData;
 using blink::WebMediaPlayerAction;
@@ -303,6 +307,17 @@ 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)
+  auto guest_view =
+      extensions::MimeHandlerViewGuest::FromWebContents(web_contents);
+  if (guest_view)
+    return guest_view->embedder_web_contents();
+#endif
+  return web_contents;
+}
+
 bool g_custom_id_ranges_initialized = false;
 
 const int kSpellcheckRadioGroup = 1;
@@ -339,6 +354,7 @@ RenderViewContextMenu::RenderViewContextMenu(
   }
   set_content_type(ContextMenuContentTypeFactory::Create(
       source_web_contents_, params));
+  embedder_web_contents_ = GetWebContentsToUse(source_web_contents_);

[lazyboy, 2015/04/30 16:33:31]

Can we move this to member initializer list above?

[Deepak, 2015/05/02 06:25:20]

Done.

 }
 
 RenderViewContextMenu::~RenderViewContextMenu() {