[cr149] TranslateLanguageList with TranslateUrlFetcher arg

This change corrects several places to pass `TranslateUrlFetcher` into
`TranslateLanguageList`.

Chromium changes:
https://chromium.googlesource.com/chromium/src/+/6aef37c345ee6449713a213c04878417dd87d0c4

commit 6aef37c345ee6449713a213c04878417dd87d0c4
Author: Danilo Françoso Tedeschi <danft@google.com>
Date:   Wed Apr 8 06:26:11 2026 -0700

    Replace static DisableUpdate with dependency injection for TranslateLanguageList.

    This change removes the global static flag `update_is_disabled` from TranslateLanguageList and instead allows injecting a TranslateUrlFetcher instance. This improves testability by allowing mock fetchers to be used without relying on global state. TranslateDownloadManager now has a setter for its TranslateLanguageList.

    Change-Id: I739659aba52e95e6236e0b5d85fd9672b090c864
    Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7719220
    Reviewed-by: Basia Zimirska <basiaz@google.com>
    Commit-Queue: Danilo Françoso Tedeschi <danft@google.com>
    Cr-Commit-Position: refs/heads/main@{#1611437}

chromium_src/components/translate/core/browser/translate_language_list.h

@@ -16,6 +16,7 @@ namespace translate {
 
 class TranslateLanguageList : public TranslateLanguageList_ChromiumImpl {
  public:
+  using TranslateLanguageList_ChromiumImpl::TranslateLanguageList_ChromiumImpl;
   void SetResourceRequestsAllowed(bool allowed) override;
 };
 

chromium_src/components/translate/core/browser/translate_manager_unittest.cc

@@ -25,6 +25,7 @@
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "components/translate/core/browser/translate_pref_names.h"
 #include "components/translate/core/browser/translate_prefs.h"
+#include "components/translate/core/browser/translate_url_fetcher.h"
 #include "components/translate/core/common/translate_constants.h"
 #include "components/variations/variations_associated_data.h"
 #include "google_apis/google_api_keys.h"
@@ -77,6 +78,18 @@ class TestNetworkChangeNotifier {
   std::unique_ptr<net::test::MockNetworkChangeNotifier> mock_notifier_;
 };
 
+class DummyTranslateUrlFetcher : public translate::TranslateUrlFetcher {
+ public:
+  DummyTranslateUrlFetcher() = default;
+  ~DummyTranslateUrlFetcher() override = default;
+
+  bool Request(const GURL& url, Callback callback, bool is_incognito) override {
+    return true;
+  }
+
+  State state() const override { return IDLE; }
+};
+
 // A language model that just returns its instance variable.
 class MockLanguageModel : public language::LanguageModel {
  public:
@@ -119,10 +132,11 @@ class TranslateManagerTest : public ::testing::Test {
         mock_language_model_({MockLanguageModel::LanguageDetails("en", 1.0)}) {}
 
   void SetUp() override {
-    // Ensure we're not requesting a server-side translate language list.
-    TranslateLanguageList::DisableUpdate();
-
     manager_->ResetForTesting();
+
+    // Ensure we're not requesting a server-side translate language list.
+    manager_->set_language_list(std::make_unique<TranslateLanguageList>(
+        std::make_unique<DummyTranslateUrlFetcher>()));
   }
 
   void TearDown() override {