Extract ProcessManager from ExtensionSystem.

extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.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 "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
 
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/url_constants.h"
 #include "extensions/browser/api/extensions_api_client.h"
 #include "extensions/browser/extension_registry.h"
-#include "extensions/browser/extension_system.h"
 #include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_constants.h"
 #include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest_delegate.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/feature_switch.h"
 #include "extensions/common/guest_view/guest_view_constants.h"
 #include "extensions/strings/grit/extensions_strings.h"
 #include "ipc/ipc_message_macros.h"
 #include "net/base/url_util.h"
 
@@ skipping 67 matching lines @@
       // terminated (ExtensionRegistry::TERMINATED)?
       ExtensionRegistry::Get(browser_context())->enabled_extensions().GetByID(
           mime_handler_extension_url.host());
   if (!mime_handler_extension) {
     LOG(ERROR) << "Extension for mime_type not found, mime_type = "
                << orig_mime_type;
     callback.Run(NULL);
     return;
   }
 
-  ProcessManager* process_manager =
-      ExtensionSystem::Get(browser_context())->process_manager();
-  DCHECK(process_manager);
-
   // Use the mime handler extension's SiteInstance to create the guest so it
   // goes under the same process as the extension.
+  ProcessManager* process_manager = ProcessManager::Get(browser_context());
   content::SiteInstance* guest_site_instance =
       process_manager->GetSiteInstanceForURL(
           Extension::GetBaseURLFromExtensionId(embedder_extension_id));
 
   WebContents::CreateParams params(browser_context(), guest_site_instance);
   params.guest_delegate = this;
   callback.Run(WebContents::Create(params));
 }
 
 void MimeHandlerViewGuest::DidAttachToEmbedder() {
@@ skipping 82 matching lines @@
 
 void MimeHandlerViewGuest::OnRequest(
     const ExtensionHostMsg_Request_Params& params) {
   if (extension_function_dispatcher_) {
     extension_function_dispatcher_->Dispatch(
         params, web_contents()->GetRenderViewHost());
   }
 }
 
 }  // namespace extensions