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

extensions/common/api/app_window.idl

Index: extensions/common/api/app_window.idl
diff --git a/extensions/common/api/app_window.idl b/extensions/common/api/app_window.idl
index 1df52a3c71ae3f0dc303354e7360977badfbe8a0..f75978ec2688f6bf9c394d7e99f461214023fdd8 100644
--- a/extensions/common/api/app_window.idl
+++ b/extensions/common/api/app_window.idl
@@ -389,12 +389,6 @@ namespace app.window {
     // that support this).
     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;