In DevicePermissionsViewController disable Connect button if no device selected on Mac

chrome/browser/ui/cocoa/extensions/device_permissions_view_controller.mm

Index: chrome/browser/ui/cocoa/extensions/device_permissions_view_controller.mm
diff --git a/chrome/browser/ui/cocoa/extensions/device_permissions_view_controller.mm b/chrome/browser/ui/cocoa/extensions/device_permissions_view_controller.mm
index bcade03655893262b556b164ebdc2cbb0df111eb..bcd4502d096ee91324d7f8e0dabd3da656ffbba5 100644
--- a/chrome/browser/ui/cocoa/extensions/device_permissions_view_controller.mm
+++ b/chrome/browser/ui/cocoa/extensions/device_permissions_view_controller.mm
@@ -46,6 +46,8 @@ using extensions::DevicePermissionsPrompt;
   [promptField_
       setStringValue:base::SysUTF16ToNSString(prompt_->GetPromptMessage())];
   [tableView_ setAllowsMultipleSelection:prompt_->multiple()];
+  [tableView_ setDelegate:self];
+  [tableView_ setDataSource:self];
   [[deviceNameColumn_ headerCell]
       setStringValue:l10n_util::GetNSString(
                          IDS_DEVICE_PERMISSIONS_DIALOG_DEVICE_NAME_COLUMN)];
@@ -54,6 +56,7 @@ using extensions::DevicePermissionsPrompt;
                          IDS_DEVICE_PERMISSIONS_DIALOG_SERIAL_NUMBER_COLUMN)];
   [okButton_
       setTitle:l10n_util::GetNSString(IDS_DEVICE_PERMISSIONS_DIALOG_SELECT)];
+  [okButton_ setEnabled:NO];
   [cancelButton_ setTitle:l10n_util::GetNSString(IDS_CANCEL)];
 }
 
@@ -75,4 +78,8 @@ using extensions::DevicePermissionsPrompt;
   }
 }
 
+- (void)tableViewSelectionDidChange:(NSNotification*)aNotification {
+  [okButton_ setEnabled:[tableView_ numberOfSelectedRows] > 0];
+}
+
 @end