Don't try to reload blacklisted extensions.

chrome/browser/extensions/extension_service_unittest.cc

Index: chrome/browser/extensions/extension_service_unittest.cc
diff --git a/chrome/browser/extensions/extension_service_unittest.cc b/chrome/browser/extensions/extension_service_unittest.cc
index ce441ed017dbb7546c1b1e51a16840b2df49a358..2d6a92750049afccd551d948e5f2f1a5532355d4 100644
--- a/chrome/browser/extensions/extension_service_unittest.cc
+++ b/chrome/browser/extensions/extension_service_unittest.cc
@@ -3018,6 +3018,18 @@ bool IsExtension(const Extension* extension) {
   return extension->GetType() == Manifest::TYPE_EXTENSION;
 }
 
+std::set<std::string> StringSet(const std::string& s) {
+  std::set<std::string> set;
+  set.insert(s);
+  return set;
+}
+
+std::set<std::string> StringSet(const std::string& s1, const std::string& s2) {
+  std::set<std::string> set = StringSet(s1);
+  set.insert(s2);
+  return set;
+}
+
 }  // namespace
 
 // Test adding a pending extension.
@@ -3636,6 +3648,35 @@ TEST_F(ExtensionServiceTest, GreylistUnknownDontChange) {
   EXPECT_TRUE(enabled_extensions.Contains(good2));
   EXPECT_FALSE(disabled_extensions.Contains(good2));
 }
+
+// Tests that blacklisted extensions cannot be reloaded, both those loaded
+// before and after extension service startup.
+TEST_F(ExtensionServiceTest, ReloadBlacklistedExtension) {
+  extensions::TestBlacklist test_blacklist;
+
+  InitializeGoodInstalledExtensionService();
+  test_blacklist.Attach(service_->blacklist_);
+
+  test_blacklist.SetBlacklistState(
+      good1, extensions::BLACKLISTED_MALWARE, false);
+  service_->Init();
+  test_blacklist.SetBlacklistState(
+      good2, extensions::BLACKLISTED_MALWARE, false);
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(StringSet(good0), registry_->enabled_extensions().GetIDs());
+  EXPECT_EQ(StringSet(good1, good2),
+            registry_->blacklisted_extensions().GetIDs());
+
+  service_->ReloadExtension(good1);
+  service_->ReloadExtension(good2);
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(StringSet(good0), registry_->enabled_extensions().GetIDs());
+  EXPECT_EQ(StringSet(good1, good2),
+            registry_->blacklisted_extensions().GetIDs());
+}
+
 #endif  // defined(ENABLE_BLACKLIST_TESTS)
 
 // Will not install extension blacklisted by policy.