Input mangers live in the "InputManagers" directory, not "Input Managers".

chrome/browser/chrome_browser_application_mac.mm

 // 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.
 
 #import "chrome/browser/chrome_browser_application_mac.h"
 
 #import "base/logging.h"
 #import "base/mac/mac_util.h"
 #import "base/mac/scoped_nsexception_enabler.h"
 #import "base/metrics/histogram.h"
@@ skipping 145 matching lines @@
     @"Application Support/SIMBL/Plugins/",
 
 #if !defined(__LP64__)
     // Contextual menu manager plug-ins are unavailable to 64-bit processes.
     // http://developer.apple.com/library/mac/releasenotes/Cocoa/AppKitOlderNotes.html#NSMenu
     @"Contextual Menu Items/",
 
     // Input managers are deprecated, would only be loaded under specific
     // circumstances, and are entirely unavailable to 64-bit processes.
     // http://developer.apple.com/library/mac/releasenotes/Cocoa/AppKitOlderNotes.html#NSInputManager
-    @"Input Managers/",
+    @"InputManagers/",
 #endif  // __LP64__
 
     // Don't load third-party scripting additions either.
     @"ScriptingAdditions/"
 
     // This list is intentionally incomplete. For example, it doesn't block
     // printer drivers or Internet plug-ins.
   };
 
   NSString* bundlePath = [self bundlePath];
@@ skipping 344 matching lines @@
         if (RenderViewHost* rvh = contents->render_view_host()) {
           rvh->EnableRendererAccessibility();
         }
       }
     }
   }
   return [super accessibilitySetValue:value forAttribute:attribute];
 }
 
 @end