Space key doesn't work in AURA enabled build because in case of space key,

ui/aura/desktop_host_linux.cc

 // Copyright (c) 2011 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 "ui/aura/desktop_host.h"
 
 #include <X11/cursorfont.h>
 #include <X11/Xlib.h>
 
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
@@ skipping 197 matching lines @@
     case ui::VKEY_OEM_3:
     case ui::VKEY_OEM_4:
     case ui::VKEY_OEM_5:
     case ui::VKEY_OEM_6:
     case ui::VKEY_OEM_7:
     case ui::VKEY_OEM_102:
     case ui::VKEY_OEM_PLUS:
     case ui::VKEY_OEM_COMMA:
     case ui::VKEY_OEM_MINUS:
     case ui::VKEY_OEM_PERIOD:
+    case ui::VKEY_SPACE:

[sadrul, 2011/11/07 17:26:47]

Move this up above VKEY_TAB.

[Amruth Raj, 2011/11/08 05:47:17]

Done.

       return true;
     default:
       return false;
   }
 }
 
 class DesktopHostLinux : public DesktopHost {
  public:
   explicit DesktopHostLinux(const gfx::Rect& bounds);
   virtual ~DesktopHostLinux();
@@ skipping 260 matching lines @@
   return new DesktopHostLinux(bounds);
 }
 
 // static
 gfx::Size DesktopHost::GetNativeDisplaySize() {
   ::Display* xdisplay = base::MessagePumpX::GetDefaultXDisplay();
   return gfx::Size(DisplayWidth(xdisplay, 0), DisplayHeight(xdisplay, 0));
 }
 
 }  // namespace aura