Extract ProcessManager from ExtensionSystem.

chrome/browser/apps/window_controls_browsertest.cc

 // Copyright 2013 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/apps/app_browsertest_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/test/browser_test_utils.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/switches.h"
 #include "extensions/test/extension_test_message_listener.h"
 
 class WindowControlsTest : public extensions::PlatformAppBrowserTest {
  protected:
   void SetUpCommandLine(CommandLine* command_line) override {
     extensions::PlatformAppBrowserTest::SetUpCommandLine(command_line);
     command_line->AppendSwitch(extensions::switches::kEnableAppWindowControls);
   }
   content::WebContents* GetWebContentsForExtensionWindow(
       const extensions::Extension* extension);
 };
 
 content::WebContents* WindowControlsTest::GetWebContentsForExtensionWindow(
     const extensions::Extension* extension) {
   extensions::ProcessManager* process_manager =
-      extensions::ExtensionSystem::Get(profile())->process_manager();
+      extensions::ProcessManager::Get(profile());
 
   // Lookup render view host for background page.
   const extensions::ExtensionHost* extension_host =
       process_manager->GetBackgroundHostForExtension(extension->id());
   content::RenderViewHost* background_view_host =
       extension_host->render_view_host();
 
   // Go through all active views, looking for the first window of the extension
   const extensions::ProcessManager::ViewSet all_views =
       process_manager->GetAllViews();
@@ skipping 32 matching lines @@
   const int controlOffset = 25;
   int x = web_contents->GetContainerBounds().size().width() - controlOffset;
   int y = controlOffset;
   content::SimulateMouseClickAt(web_contents,
                                 0,
                                 blink::WebMouseEvent::ButtonLeft,
                                 gfx::Point(x, y));
 
   ASSERT_TRUE(window_closed.WaitUntilSatisfied());
 }