[Blimp] Adds Blimp EngineSession and ClientSession skeleton

blimp/engine/browser/blimp_window.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 BLIMP_ENGINE_BROWSER_BLIMP_WINDOW_H_
-#define BLIMP_ENGINE_BROWSER_BLIMP_WINDOW_H_
-
-#include <vector>
-
-#include "base/lazy_instance.h"
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "content/public/browser/web_contents_delegate.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "ui/gfx/geometry/size.h"
-
-namespace content {
-class BrowserContext;
-class SiteInstance;
-class WebContents;
-}
-
-class GURL;
-
-namespace blimp {
-namespace engine {
-
-// Owns and controls a WebContents instance corresponding to a window on
-// Blimp client.
-class BlimpWindow : public content::WebContentsDelegate {
- public:
-  // This also unregisters itself with a singleton registry.
-  ~BlimpWindow() override;
-
-  // Creates a new blimp window with |initial_size| and navigates to the |url|.
-  // Caller retains ownership of |browser_context| and |site_instance| and
-  // ensures |browser_context| and |site_instance| outlives BlimpWindow.
-  static void Create(content::BrowserContext* browser_context,
-                     const GURL& url,
-                     content::SiteInstance* site_instance,
-                     const gfx::Size& initial_size);
-
-  // Navigates to |url|.
-  void LoadURL(const GURL& url);
-
-  // content::WebContentsDelegate implementation.
-  content::WebContents* OpenURLFromTab(
-      content::WebContents* source,
-      const content::OpenURLParams& params) override;
-  void AddNewContents(content::WebContents* source,
-                      content::WebContents* new_contents,
-                      WindowOpenDisposition disposition,
-                      const gfx::Rect& initial_rect,
-                      bool user_gesture,
-                      bool* was_blocked) override;
-  void RequestToLockMouse(content::WebContents* web_contents,
-                          bool user_gesture,
-                          bool last_unlocked_by_target) override;
-  void CloseContents(content::WebContents* source) override;
-  void ActivateContents(content::WebContents* contents) override;
-  void DeactivateContents(content::WebContents* contents) override;
-
- private:
-  // The newly created instance registers itself with a singleton registry.
-  explicit BlimpWindow(scoped_ptr<content::WebContents> web_contents);
-
-  // Helper to create a new BlimpWindow given |web_contents|.
-  // The newly window is owned by a singleton registry.
-  static BlimpWindow* DoCreate(scoped_ptr<content::WebContents> web_contents,
-                               const gfx::Size& initial_size);
-
-  scoped_ptr<content::WebContents> web_contents_;
-
-  DISALLOW_COPY_AND_ASSIGN(BlimpWindow);
-};
-
-}  // namespace engine
-}  // namespace blimp
-
-#endif  // BLIMP_ENGINE_BROWSER_BLIMP_WINDOW_H_