[Blimp] Adds Blimp EngineSession and ClientSession skeleton

blimp/engine/browser/blimp_engine_session.h

Index: blimp/engine/browser/blimp_engine_session.h
diff --git a/blimp/engine/browser/blimp_engine_session.h b/blimp/engine/browser/blimp_engine_session.h
new file mode 100644
index 0000000000000000000000000000000000000000..c16186741c87e547e44fc331fd0ed1dc148f6a70
--- /dev/null
+++ b/blimp/engine/browser/blimp_engine_session.h
@@ -0,0 +1,85 @@
+// 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_ENGINE_SESSION_H_
+#define BLIMP_ENGINE_BROWSER_BLIMP_ENGINE_SESSION_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "blimp/net/blimp_message_receiver.h"
+#include "content/public/browser/web_contents_delegate.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace content {
+class BrowserContext;
+class WebContents;
+}
+
+namespace blimp {
+
+class BlimpClientSession;
+class BlimpMessage;
+
+namespace engine {
+
+class BlimpBrowserContext;
+class BlimpScreen;
+
+class BlimpEngineSession : public BlimpMessageReceiver,
+                           public content::WebContentsDelegate {
+ public:
+  explicit BlimpEngineSession(scoped_ptr<BlimpBrowserContext> browser_context);
+  ~BlimpEngineSession() override;
+
+  void Initialize();
+
+  BlimpBrowserContext* browser_context() { return browser_context_.get(); }
+
+  void AttachClientSession(scoped_ptr<BlimpClientSession> client_session);
+
+ private:
+  // Creates a new WebContents, which will be indexed by |target_tab_id|.
+  void CreateWebContents(const int target_tab_id);
+
+  // Navigates the target tab to the |url|.
+  void LoadUrl(const int target_tab_id, const GURL& url);
+
+  // BlimpMessageReceiver implementation.
+  net::Error OnBlimpMessage(const BlimpMessage& message) override;
+
+  // 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;
+
+  // Sets up and owns |new_contents|.
+  void PlatformSetContents(scoped_ptr<content::WebContents> new_contents);
+
+  scoped_ptr<BlimpBrowserContext> browser_context_;
+  scoped_ptr<BlimpScreen> screen_;
+
+  // Only one web_contents is supported for blimp 0.5
+  scoped_ptr<content::WebContents> web_contents_;
+
+  // Currently attached client session.
+  scoped_ptr<BlimpClientSession> client_session_;
+  DISALLOW_COPY_AND_ASSIGN(BlimpEngineSession);
+};
+
+}  // namespace engine
+}  // namespace blimp
+
+#endif  // BLIMP_ENGINE_BROWSER_BLIMP_ENGINE_SESSION_H_