Fix multiscript tests. Code merged for 45 was accidentally crashing the render process when V8 thre…

Source/bindings/core/dart/DartJsInterop.cpp

Index: Source/bindings/core/dart/DartJsInterop.cpp
diff --git a/Source/bindings/core/dart/DartJsInterop.cpp b/Source/bindings/core/dart/DartJsInterop.cpp
index 4afe555d642e06a1da77065ccd5bf18c0dba5f38..80bda03720c1b086ea9c67221804044cc6ce17bd 100644
--- a/Source/bindings/core/dart/DartJsInterop.cpp
+++ b/Source/bindings/core/dart/DartJsInterop.cpp
@@ -978,8 +978,15 @@ static void callMethodCallback(Dart_NativeArguments args)
 
         v8::Local<v8::Value> value = v8Receiver->Get(V8Converter::stringToV8(name));
         v8::Local<v8::Value> ret;
+
         if (value->IsFunction()) {
-            ret = V8ScriptRunner::callFunction(value.As<v8::Function>(), DartUtilities::scriptExecutionContext(), receiver->localV8Object(), v8Args.size(), v8Args.data(), v8::Isolate::GetCurrent()).ToLocalChecked();
+
+            v8::Local<v8::Value> result;
+            if (!V8ScriptRunner::callFunction(value.As<v8::Function>(),
+                DartUtilities::scriptExecutionContext(), receiver->localV8Object(), v8Args.size(), v8Args.data(), v8::Isolate::GetCurrent()).ToLocal(&ret)) {
+                exception = Dart_NewStringFromCString("V8 Exception");
+                goto fail;
+            }
         } else {
             // FIXME: we currently convert this exception to a NoSuchMethod
             // exception in the Dart code that wraps this native method.
@@ -1113,12 +1120,16 @@ static void applyCallback(Dart_NativeArguments args)
             }
         }
 
-        v8::Local<v8::Value> ret = V8ScriptRunner::callFunction(receiver->localV8Function(),
-            DartUtilities::scriptExecutionContext(),
-            thisArg.As<v8::Object>(),
-            v8Args.size(),
-            v8Args.data(),
-            v8::Isolate::GetCurrent()).ToLocalChecked();
+        v8::Local<v8::Value> ret;
+        if (!V8ScriptRunner::callFunction(receiver->localV8Function(),
+                DartUtilities::scriptExecutionContext(),
+                thisArg.As<v8::Object>(),
+                v8Args.size(),
+                v8Args.data(),
+                v8::Isolate::GetCurrent()).ToLocal(&ret)) {
+            exception = Dart_NewStringFromCString("V8 Exception");
+            goto fail;
+        }
         if (scopes.handleJsException(&exception))
             goto fail;
         scopes.setReturnValue(ret);
@@ -1158,12 +1169,16 @@ static void applyDebuggerOnlyCallback(Dart_NativeArguments args)
             }
         }
 
-        v8::Local<v8::Value> ret = V8ScriptRunner::callFunction(receiver->localV8Function(),
-            DartUtilities::scriptExecutionContext(),
-            thisArg.As<v8::Object>(),
-            v8Args.size(),
-            v8Args.data(),
-            v8::Isolate::GetCurrent()).ToLocalChecked();
+        v8::Local<v8::Value> ret;
+        if (!V8ScriptRunner::callFunction(receiver->localV8Function(),
+                DartUtilities::scriptExecutionContext(),
+                thisArg.As<v8::Object>(),
+                v8Args.size(),
+                v8Args.data(),
+                v8::Isolate::GetCurrent()).ToLocal(&ret)) {
+            exception = Dart_NewStringFromCString("V8 Exception");
+            goto fail;
+        }
         if (scopes.handleJsException(&exception))
             goto fail;
         scopes.setReturnValue(ret);