Auto merge of #23006 - aditj:aditj-patch-7, r=jdm

Added WebDriver DeleteCookies Function

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This change adds DeleteCookies function of the webdriver crate to the servo webdriver server.
See [spec](https://w3c.github.io/webdriver/#delete-all-cookies)

---
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- [x] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix part of #8623 (GitHub issue number if applicable)

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- [X] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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components/script/script_thread.rs

@@ -1844,6 +1844,9 @@ impl ScriptThread {
             WebDriverScriptCommand::AddCookie(params, reply) => {
                 webdriver_handlers::handle_add_cookie(&*documents, pipeline_id, params, reply)
             },
+            WebDriverScriptCommand::DeleteCookies(reply) => {
+                webdriver_handlers::handle_delete_cookies(&*documents, pipeline_id, reply)
+            },
             WebDriverScriptCommand::ExecuteScript(script, reply) => {
                 webdriver_handlers::handle_execute_script(&*documents, pipeline_id, script, reply)
             },

components/script/webdriver_handlers.rs

@@ -34,7 +34,7 @@ use js::rust::HandleValue;
 use msg::constellation_msg::BrowsingContextId;
 use msg::constellation_msg::PipelineId;
 use net_traits::CookieSource::{NonHTTP, HTTP};
-use net_traits::CoreResourceMsg::{GetCookiesDataForUrl, SetCookieForUrl};
+use net_traits::CoreResourceMsg::{DeleteCookies, GetCookiesDataForUrl, SetCookieForUrl};
 use net_traits::IpcSend;
 use script_traits::webdriver_msg::WebDriverCookieError;
 use script_traits::webdriver_msg::{
@@ -356,6 +356,27 @@ pub fn handle_add_cookie(
         .unwrap();
 }
 
+pub fn handle_delete_cookies(
+    documents: &Documents,
+    pipeline: PipelineId,
+    reply: IpcSender<Result<(), ()>>,
+) {
+    let document = match documents.find_document(pipeline) {
+        Some(document) => document,
+        None => {
+            return reply.send(Err(())).unwrap();
+        },
+    };
+    let url = document.url();
+    document
+        .window()
+        .upcast::<GlobalScope>()
+        .resource_threads()
+        .send(DeleteCookies(url))
+        .unwrap();
+    let _ = reply.send(Ok(()));
+}
+
 pub fn handle_get_title(documents: &Documents, pipeline: PipelineId, reply: IpcSender<String>) {
     // TODO: Return an error if the pipeline doesn't exist.
     let title = documents