Move functions from handles.cc to where they belong.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 91b8e8371fa3a4aedad5d61a2e8d0d65b83a2ea3..c148a1dc537ce56b70ad5ad3537a2d178db020f4 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -531,7 +531,7 @@ Handle<JSArray> Isolate::CaptureCurrentStackTrace(
       if (options & StackTrace::kLineNumber) {
         int script_line_offset = script->line_offset()->value();
         int position = frames[i].code()->SourcePosition(frames[i].pc());
-        int line_number = GetScriptLineNumber(script, position);
+        int line_number = Script::GetLineNumber(script, position);
         // line_number is already shifted by the script_line_offset.
         int relative_line_number = line_number - script_line_offset;
         if (options & StackTrace::kColumnOffset && relative_line_number >= 0) {
@@ -566,7 +566,7 @@ Handle<JSArray> Isolate::CaptureCurrentStackTrace(
       }
 
       if (options & StackTrace::kScriptNameOrSourceURL) {
-        Handle<Object> result = GetScriptNameOrSourceURL(script);
+        Handle<Object> result = Script::GetNameOrSourceURL(script);
         JSObject::SetLocalPropertyIgnoreAttributes(
             stack_frame, script_name_or_source_url_key, result, NONE).Check();
       }
@@ -831,8 +831,8 @@ Failure* Isolate::StackOverflow() {
   DoThrow(*exception, NULL);
 
   // Get stack trace limit.
-  Handle<Object> error =
-      GetProperty(js_builtins_object(), "$Error").ToHandleChecked();
+  Handle<Object> error = Object::GetProperty(
+      this, js_builtins_object(), "$Error").ToHandleChecked();
   if (!error->IsJSObject()) return Failure::Exception();
 
   Handle<String> stackTraceLimit =
@@ -1149,19 +1149,19 @@ void Isolate::DoThrow(Object* exception, MessageLocation* location) {
       // In this case we could have an extension (or an internal error
       // somewhere) and we print out the line number at which the error occured
       // to the console for easier debugging.
-      int line_number = GetScriptLineNumberSafe(location->script(),
-                                                location->start_pos());
+      int line_number =
+          location->script()->GetLineNumber(location->start_pos()) + 1;
       if (exception->IsString() && location->script()->name()->IsString()) {
         OS::PrintError(
             "Extension or internal compilation error: %s in %s at line %d.\n",
             String::cast(exception)->ToCString().get(),
             String::cast(location->script()->name())->ToCString().get(),
-            line_number + 1);
+            line_number);
       } else if (location->script()->name()->IsString()) {
         OS::PrintError(
             "Extension or internal compilation error in %s at line %d.\n",
             String::cast(location->script()->name())->ToCString().get(),
-            line_number + 1);
+            line_number);
       } else {
         OS::PrintError("Extension or internal compilation error.\n");
       }