headless: Require the user to pass in an initial URL

headless/lib/browser/headless_web_contents_impl.h

 // Copyright 2015 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.
 
 #ifndef HEADLESS_LIB_BROWSER_HEADLESS_WEB_CONTENTS_IMPL_H_
 #define HEADLESS_LIB_BROWSER_HEADLESS_WEB_CONTENTS_IMPL_H_
 
 #include "headless/public/headless_web_contents.h"
 
 #include <memory>
@@ skipping 10 matching lines @@
 
 namespace gfx {
 class Size;
 }
 
 namespace headless {
 class WebContentsObserverAdapter;
 
 class HeadlessWebContentsImpl : public HeadlessWebContents {
  public:
+  HeadlessWebContentsImpl(content::BrowserContext* context,
+                          aura::Window* parent_window,
+                          const gfx::Size& initial_size);
   ~HeadlessWebContentsImpl() override;
 
   // HeadlessWebContents implementation:
-  bool OpenURL(const GURL& url) override;
   void AddObserver(Observer* observer) override;
   void RemoveObserver(Observer* observer) override;
 
   content::WebContents* web_contents() const;
+  bool OpenURL(const GURL& url);
 
  private:
-  friend class HeadlessBrowserImpl;
-
-  HeadlessWebContentsImpl(content::BrowserContext* context,
-                          aura::Window* parent_window,
-                          const gfx::Size& initial_size);
-
   class Delegate;
   std::unique_ptr<Delegate> web_contents_delegate_;
   std::unique_ptr<content::WebContents> web_contents_;
 
   using ObserverMap =
       std::unordered_map<HeadlessWebContents::Observer*,
                          std::unique_ptr<WebContentsObserverAdapter>>;
   ObserverMap observer_map_;
 
   DISALLOW_COPY_AND_ASSIGN(HeadlessWebContentsImpl);
 };
 
 }  // namespace headless
 
 #endif  // HEADLESS_LIB_BROWSER_HEADLESS_WEB_CONTENTS_IMPL_H_