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

apps/app_window.cc

Index: apps/app_window.cc
diff --git a/apps/app_window.cc b/apps/app_window.cc
index df6eac7fdbfefaada9a35d7f7f376e6985a7a368..7303cf457a5717d56ab4afce0d4c18383f83dc7c 100644
--- a/apps/app_window.cc
+++ b/apps/app_window.cc
@@ -244,7 +244,8 @@ AppWindow::AppWindow(BrowserContext* context,
       can_send_events_(false),
       is_hidden_(false),
       cached_always_on_top_(false),
-      requested_transparent_background_(false) {
+      requested_transparent_background_(false),
+      cached_want_all_keys_(false) {
   extensions::ExtensionsBrowserClient* client =
       extensions::ExtensionsBrowserClient::Get();
   CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
@@ -351,6 +352,11 @@ void AppWindow::Init(const GURL& url,
 }
 
 AppWindow::~AppWindow() {
+  if (cached_want_all_keys_) {
+    native_app_window_->SetInterceptAllKeys(false);
+    cached_want_all_keys_ = false;
+  }
+
   // Unregister now to prevent getting NOTIFICATION_APP_TERMINATING if we're the
   // last window open.
   registrar_.RemoveAll();
@@ -757,6 +763,13 @@ void AppWindow::SetAlwaysOnTop(bool always_on_top) {
 
 bool AppWindow::IsAlwaysOnTop() const { return cached_always_on_top_; }
 
+void AppWindow::SetInterceptAllKeys(bool want_all_keys) {
+  if (cached_want_all_keys_ != want_all_keys) {
+    native_app_window_->SetInterceptAllKeys(want_all_keys);
+    cached_want_all_keys_ = want_all_keys;
+  }
+}
+
 void AppWindow::WindowEventsReady() {
   can_send_events_ = true;
   SendOnWindowShownIfShown();