Begin whitelisting specific extensions for global key registration.

chrome/common/extensions/api/commands/commands_handler.cc

Index: chrome/common/extensions/api/commands/commands_handler.cc
diff --git a/chrome/common/extensions/api/commands/commands_handler.cc b/chrome/common/extensions/api/commands/commands_handler.cc
index 8d0788b121ceacf37f640f0e2fb5da74e2b154c9..b759bdaaf2afb3d045fb07b0d6ae7f0ec8c08c6e 100644
--- a/chrome/common/extensions/api/commands/commands_handler.cc
+++ b/chrome/common/extensions/api/commands/commands_handler.cc
@@ -10,6 +10,7 @@
 #include "chrome/common/extensions/command.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/manifest_constants.h"
+#include "extensions/common/permissions/permissions_data.h"
 
 namespace extensions {
 
@@ -97,7 +98,9 @@ bool CommandsHandler::Parse(Extension* extension, base::string16* error) {
       if (!Command::IsMediaKey(binding->accelerator()))
         ++keybindings_found;
 
-      if (keybindings_found > kMaxCommandsWithKeybindingPerExtension) {
+      if (keybindings_found > kMaxCommandsWithKeybindingPerExtension &&
+          !extension->permissions_data()->HasAPIPermission(
+              APIPermission::kCommandsAccessibility)) {
         *error = ErrorUtils::FormatErrorMessageUTF16(
             manifest_errors::kInvalidKeyBindingTooMany,
             base::IntToString(kMaxCommandsWithKeybindingPerExtension));