Remove unused content blocker code.

I don't know what it is for, so I believe it would be better to remove it
entirely until and unless we start using it.

Cargo.lock

@@ -1670,7 +1670,6 @@ name = "net"
 version = "0.0.1"
 dependencies = [
  "brotli 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "content-blocker 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "cookie 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "devtools_traits 0.0.1",
  "flate2 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1678,7 +1677,6 @@ dependencies = [
  "hyper_serde 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "immeta 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",

components/net/Cargo.toml

@@ -11,7 +11,6 @@ path = "lib.rs"
 
 [dependencies]
 brotli = "1.0.6"
-content-blocker = "0.2.3"
 cookie = "0.2.5"
 devtools_traits = {path = "../devtools_traits"}
 flate2 = "0.2.0"
@@ -19,7 +18,6 @@ hyper = "0.9.9"
 hyper_serde = "0.5"
 immeta = "0.3.1"
 ipc-channel = "0.7"
-lazy_static = "0.2"
 log = "0.3.5"
 matches = "0.1"
 mime = "0.2.1"

components/net/content_blocker.rs

@@ -1,31 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-use content_blocker_parser::{RuleList, parse_list};
-use servo_config::resource_files::read_resource_file;
-use std::str;
-use std::sync::Arc;
-
-lazy_static! {
-    pub static ref BLOCKED_CONTENT_RULES: Arc<Option<RuleList>> = Arc::new(create_rule_list());
-}
-
-fn create_rule_list() -> Option<RuleList> {
-    let contents = match read_resource_file("blocked-content.json") {
-        Ok(c) => c,
-        Err(_) => return None,
-    };
-
-    let str_contents = match str::from_utf8(&contents) {
-        Ok(c) => c,
-        Err(_) => return None,
-    };
-
-    let list = match parse_list(&str_contents) {
-        Ok(l) => l,
-        Err(_) => return None,
-    };
-
-    Some(list)
-}

components/net/http_loader.rs

@@ -4,7 +4,6 @@
 
 use brotli::Decompressor;
 use connector::{Connector, create_http_connector};
-use content_blocker_parser::RuleList;
 use cookie;
 use cookie_storage::CookieStorage;
 use devtools_traits::{ChromeToDevtoolsControlMsg, DevtoolsControlMsg, HttpRequest as DevtoolsHttpRequest};
@@ -70,7 +69,6 @@ pub struct HttpState {
     pub hsts_list: Arc<RwLock<HstsList>>,
     pub cookie_jar: Arc<RwLock<CookieStorage>>,
     pub auth_cache: Arc<RwLock<AuthCache>>,
-    pub blocked_content: Arc<Option<RuleList>>,
     pub connector_pool: Arc<Pool<Connector>>,
 }
 
@@ -80,7 +78,6 @@ impl HttpState {
             hsts_list: Arc::new(RwLock::new(HstsList::new())),
             cookie_jar: Arc::new(RwLock::new(CookieStorage::new(150))),
             auth_cache: Arc::new(RwLock::new(AuthCache::new())),
-            blocked_content: Arc::new(None),
             connector_pool: create_http_connector(certificate_path),
         }
     }

components/net/lib.rs

@@ -7,7 +7,6 @@
 #![feature(mpsc_select)]
 
 extern crate brotli;
-extern crate content_blocker as content_blocker_parser;
 extern crate cookie as cookie_rs;
 extern crate devtools_traits;
 extern crate flate2;
@@ -15,7 +14,6 @@ extern crate hyper;
 extern crate hyper_serde;
 extern crate immeta;
 extern crate ipc_channel;
-#[macro_use] extern crate lazy_static;
 #[macro_use] extern crate log;
 #[macro_use] #[no_link] extern crate matches;
 #[macro_use]
@@ -46,7 +44,6 @@ extern crate websocket;
 mod blob_loader;
 mod chrome_loader;
 mod connector;
-mod content_blocker;
 pub mod cookie;
 pub mod cookie_storage;
 mod data_loader;

components/net/resource_thread.rs

@@ -4,7 +4,6 @@
 
 //! A thread that takes a URL and streams back the binary data.
 use connector::{Connector, create_http_connector};
-use content_blocker::BLOCKED_CONTENT_RULES;
 use cookie;
 use cookie_rs;
 use cookie_storage::CookieStorage;
@@ -324,7 +323,6 @@ impl CoreResourceManager {
             hsts_list: group.hsts_list.clone(),
             cookie_jar: group.cookie_jar.clone(),
             auth_cache: group.auth_cache.clone(),
-            blocked_content: BLOCKED_CONTENT_RULES.clone(),
             // FIXME(#15694): use group.connector.clone() instead.
             connector_pool: create_http_connector("certs"),
         };

tests/unit/net/http_loader.rs

@@ -1118,78 +1118,3 @@ fn test_auth_ui_needs_www_auth() {
 
     assert_eq!(response.status.unwrap(), StatusCode::Unauthorized);
 }
-
-#[test]
-fn test_content_blocked() {
-    let handler = move |_: HyperRequest, response: HyperResponse| {
-        response.send(b"Yay!").unwrap();
-    };
-    let (mut server, url) = make_server(handler);
-
-    let url_filter = url.as_str().replace("http://", "https?://");
-    let blocked_content_list = format!("[{{ \
-        \"trigger\": {{ \"url-filter\": \"{}\" }}, \
-        \"action\": {{ \"type\": \"block\" }} \
-    }}]", url_filter);
-
-    let mut context = new_fetch_context(None);
-    context.state.blocked_content = Arc::new(Some(parse_list(&blocked_content_list).unwrap()));
-
-    let request = Request::from_init(RequestInit {
-        url: url.clone(),
-        method: Method::Get,
-        body: None,
-        destination: Destination::Document,
-        origin: url.clone(),
-        .. RequestInit::default()
-    });
-
-    let response = fetch_with_context(request, &context);
-
-    let _ = server.close();
-
-    // TODO(#14307): this should fail.
-    assert!(response.status.unwrap().is_success());
-}
-
-#[test]
-fn test_cookies_blocked() {
-    let handler = move |request: HyperRequest, response: HyperResponse| {
-        assert_eq!(request.headers.get::<CookieHeader>(), None);
-        response.send(b"hi").unwrap();
-    };
-    let (mut server, url) = make_server(handler);
-
-    let url_filter = url.as_str().replace("http://", "https?://");
-    let blocked_content_list = format!("[{{ \
-        \"trigger\": {{ \"url-filter\": \"{}\" }}, \
-        \"action\": {{ \"type\": \"block-cookies\" }} \
-    }}]", url_filter);
-
-    let mut context = new_fetch_context(None);
-    context.state.blocked_content = Arc::new(Some(parse_list(&blocked_content_list).unwrap()));
-    {
-        let mut cookie_jar = context.state.cookie_jar.write().unwrap();
-        let cookie = Cookie::new_wrapped(
-            CookiePair::new("mozillaIs".to_owned(), "theBest".to_owned()),
-            &url,
-            CookieSource::HTTP
-        ).unwrap();
-        cookie_jar.push(cookie, &url, CookieSource::HTTP);
-    }
-
-    let request = Request::from_init(RequestInit {
-        url: url.clone(),
-        method: Method::Get,
-        body: None,
-        destination: Destination::Document,
-        origin: url.clone(),
-        .. RequestInit::default()
-    });
-
-    let response = fetch_with_context(request, &context);
-
-    let _ = server.close();
-
-    assert!(response.status.unwrap().is_success());
-}