Remove usage of deprecated APIs from cctests

test/cctest/cctest.h

Index: test/cctest/cctest.h
diff --git a/test/cctest/cctest.h b/test/cctest/cctest.h
index 428245dcf47a7c861f2bf099eab95e0f5bc6c3cf..4db0d83cb82047324be13ca8861d628e232676be 100644
--- a/test/cctest/cctest.h
+++ b/test/cctest/cctest.h
@@ -255,7 +255,7 @@ class LocalContext {
   virtual ~LocalContext() {
     v8::HandleScope scope(isolate_);
     v8::Local<v8::Context>::New(isolate_, context_)->Exit();
-    context_.Dispose();
+    context_.Reset();
   }
 
   v8::Context* operator->() {
@@ -294,7 +294,7 @@ static inline v8::Local<v8::Value> v8_num(double x) {
 
 
 static inline v8::Local<v8::String> v8_str(const char* x) {
-  return v8::String::New(x);
+  return v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), x);
 }
 
 
@@ -305,7 +305,8 @@ static inline v8::Local<v8::Script> v8_compile(const char* x) {
 
 // Helper function that compiles and runs the source.
 static inline v8::Local<v8::Value> CompileRun(const char* source) {
-  return v8::Script::Compile(v8::String::New(source))->Run();
+  return v8::Script::Compile(
+      v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), source))->Run();
 }
 
 
@@ -314,10 +315,12 @@ static inline v8::Local<v8::Value> CompileRunWithOrigin(const char* source,
                                                         const char* origin_url,
                                                         int line_number,
                                                         int column_number) {
-  v8::ScriptOrigin origin(v8::String::New(origin_url),
+  v8::Isolate* isolate = v8::Isolate::GetCurrent();
+  v8::ScriptOrigin origin(v8::String::NewFromUtf8(isolate, origin_url),
                           v8::Integer::New(line_number),
                           v8::Integer::New(column_number));
-  return v8::Script::Compile(v8::String::New(source), &origin)->Run();
+  return v8::Script::Compile(v8::String::NewFromUtf8(isolate, source), &origin)
+      ->Run();
 }