components: Add Exosphere component.

chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.h

 // Copyright (c) 2012 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 CHROME_BROWSER_UI_VIEWS_ASH_CHROME_BROWSER_MAIN_EXTRA_PARTS_ASH_H_
 #define CHROME_BROWSER_UI_VIEWS_ASH_CHROME_BROWSER_MAIN_EXTRA_PARTS_ASH_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chrome_browser_main_extra_parts.h"
 
+#if defined(ENABLE_WAYLAND_SERVER)
+namespace exo {
+class Display;
+namespace wayland {
+class Server;
+}
+}
+#endif
+
 class ChromeBrowserMainExtraPartsAsh : public ChromeBrowserMainExtraParts {
  public:
   ChromeBrowserMainExtraPartsAsh();
   ~ChromeBrowserMainExtraPartsAsh() override;
 
   // Overridden from ChromeBrowserMainExtraParts:
   void PreProfileInit() override;
   void PostProfileInit() override;
   void PostMainMessageLoopRun() override;
 
  private:
+#if defined(ENABLE_WAYLAND_SERVER)
+  scoped_ptr<exo::Display> exo_display_;

[sky, 2015/11/18 21:01:21]

Does this code need to be in ChromeBrowserMainExtraPartsAsh? Could it be moved
into your own subclass of ChromeBrowserMainExtraParts, say
ChromeBrowserMainExtraPartsWayland? If that isn't possible, could you create a
class that contains the init code that is owned by this one?

[reveman, 2015/11/18 23:55:18]

Sure, moved it to ChromeBrowserMainExtraPartsExo in latest patch. Exo suffix
rather than Wayland as the exo::Display instance used by the wayland bindings
need to be shared with non-wayland code in the near future. The idea is that
...ExtraPartsExo will own the display and initialize all exosphere bindings.

+  scoped_ptr<exo::wayland::Server> wayland_server_;
+  class WaylandWatcher;
+  scoped_ptr<WaylandWatcher> wayland_watcher_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsAsh);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_ASH_CHROME_BROWSER_MAIN_EXTRA_PARTS_ASH_H_