API proposal for chrome.app.window to intercept all keys.

extensions/common/api/app_window.idl

 // 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.
 
 // Use the <code>chrome.app.window</code> API to create windows. Windows
 // have an optional frame with title bar and size controls. They are not
 // associated with any Chrome browser windows. See the <a
 // href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/samples/window-state">
 // Window State Sample</a> for a demonstration of these options.
 namespace app.window {
@@ skipping 366 matching lines @@
 
     // Can the window use alpha transparency?
     // TODO(jackhou): Document this properly before going to stable.
     [nodoc] static boolean alphaEnabled();
 
     // For platforms that support multiple workspaces, is this window visible on
     // all of them?
     // This is only available on dev channel.
     static void setVisibleOnAllWorkspaces(boolean alwaysVisible);
 
+    // Set whether the window should get all keyboard events including system
+    // keys that are usually not sent. This is best-effort subject to platform
+    // specific constraints. Requires the <code>"app.window.allKeys"</code>
+    // permission. This is currently available only in dev channel on Windows.
+    static void setInterceptAllKeys(boolean wantAllKeys);
+
     // The JavaScript 'window' object for the created child.
     [instanceOf=Window] object contentWindow;
 
     // The id the window was created with.
     DOMString id;
 
     // The position, size and constraints of the window's content, which does
     // not include window decorations.
     // This property is new in Chrome 36.
     Bounds innerBounds;
@@ skipping 73 matching lines @@
     // Fired when the window is restored from being minimized or maximized.
     [nocompile] static void onRestored();
 
     // Fired when the window's ability to use alpha transparency changes.
     [nocompile, nodoc] static void onAlphaEnabledChanged();
 
     // Event for testing. Lets tests wait until a window has been shown.
     [nocompile, nodoc] static void onWindowFirstShown();
   };
 };