- Use a map to lookup libraries by URL.

runtime/vm/object_test.cc

Index: runtime/vm/object_test.cc
diff --git a/runtime/vm/object_test.cc b/runtime/vm/object_test.cc
index aa75ee9feb125813453efabb7898a861229fccea..3c30c91d550033f7d00d655ade3b4f5ec8d37167 100644
--- a/runtime/vm/object_test.cc
+++ b/runtime/vm/object_test.cc
@@ -4011,7 +4011,7 @@ TEST_CASE(FunctionSourceFingerprint) {
   TestCase::LoadTestScript(kScriptChars, NULL);
   EXPECT(ClassFinalizer::ProcessPendingClasses());
   const String& name = String::Handle(String::New(TestCase::url()));
-  const Library& lib = Library::Handle(Library::LookupLibrary(name));
+  const Library& lib = Library::Handle(Library::LookupLibrary(thread, name));
   EXPECT(!lib.IsNull());
 
   const Class& class_a = Class::Handle(
@@ -4076,7 +4076,7 @@ TEST_CASE(FunctionWithBreakpointNotInlined) {
 
   // With no breakpoint, function A.b is inlineable.
   const String& name = String::Handle(String::New(TestCase::url()));
-  const Library& vmlib = Library::Handle(Library::LookupLibrary(name));
+  const Library& vmlib = Library::Handle(Library::LookupLibrary(thread, name));
   EXPECT(!vmlib.IsNull());
   const Class& class_a = Class::Handle(
       vmlib.LookupClass(String::Handle(Symbols::New(thread, "A"))));