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

chrome/browser/guest_view/web_view/context_menu_content_type_web_view.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/guest_view/web_view/context_menu_content_type_web_view.h"
 
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 #include "extensions/browser/guest_view/web_view/web_view_guest.h"
+#include "extensions/browser/process_manager.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest.h"
 
+using extensions::Extension;
+using extensions::ProcessManager;
+
 ContextMenuContentTypeWebView::ContextMenuContentTypeWebView(
     content::WebContents* web_contents,
     const content::ContextMenuParams& params)
     : ContextMenuContentType(web_contents, params, true) {
 }
 
 ContextMenuContentTypeWebView::~ContextMenuContentTypeWebView() {
 }
 
+const Extension* ContextMenuContentTypeWebView::GetExtension() const {
+  ProcessManager* process_manager =
+      ProcessManager::Get(source_web_contents()->GetBrowserContext());
+  return process_manager->GetExtensionForWebContents(
+      source_web_contents());
+}
+
 bool ContextMenuContentTypeWebView::SupportsGroup(int group) {
   switch (group) {
     case ITEM_GROUP_PAGE:
     case ITEM_GROUP_FRAME:
     case ITEM_GROUP_LINK:
     case ITEM_GROUP_SEARCHWEBFORIMAGE:
     case ITEM_GROUP_SEARCH_PROVIDER:
     case ITEM_GROUP_PRINT:
     case ITEM_GROUP_ALL_EXTENSION:
     case ITEM_GROUP_PRINT_PREVIEW:
@@ skipping 26 matching lines @@
                base::CommandLine::ForCurrentProcess()->HasSwitch(
                    switches::kDebugPackedApps);
 #else
         return ContextMenuContentType::SupportsGroup(group);
 #endif
       }
     default:
       return ContextMenuContentType::SupportsGroup(group);
   }
 }