Revert "Revert "Support multiple DOM isolates and tweak devtools frontend to better handle large #s…

Source/bindings/core/dart/DartScriptState.cpp

Index: Source/bindings/core/dart/DartScriptState.cpp
diff --git a/Source/bindings/core/dart/DartScriptState.cpp b/Source/bindings/core/dart/DartScriptState.cpp
index 7b17371e6f8fc2d48176944cf43274e415a0b314..d2570e072b0462b2d7bd844a1ebbdc61bd817faa 100644
--- a/Source/bindings/core/dart/DartScriptState.cpp
+++ b/Source/bindings/core/dart/DartScriptState.cpp
@@ -39,11 +39,16 @@
 
 namespace blink {
 
-DartScriptState::DartScriptState(Dart_Isolate isolate, intptr_t libraryId, V8ScriptState* v8ScriptState)
+DartScriptState::DartScriptState(Dart_Isolate isolate, intptr_t libraryId, V8ScriptState* v8ScriptState, const String& isolateName)
 {
     m_isolate = isolate;
     m_libraryId = libraryId;
-    m_libraryUrl = DartUtilities::toString(Dart_GetLibraryURL(libraryId));
+    String libraryUrl = DartUtilities::toString(Dart_GetLibraryURL(libraryId));
+    if (!isolateName.isEmpty()) {
+        m_name = String::format("%s - %s", isolateName.utf8().data(), libraryUrl.utf8().data());
+    } else {
+        m_name = libraryUrl;
+    }
     m_v8ScriptState = v8ScriptState;
 }