DevTools: expose length of the stylesheet content in protocol

third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 1405 matching lines @@
 }
 
 std::unique_ptr<protocol::CSS::CSSStyleSheetHeader>
 InspectorStyleSheet::buildObjectForStyleSheetInfo() {
   CSSStyleSheet* styleSheet = pageStyleSheet();
   if (!styleSheet)
     return nullptr;
 
   Document* document = styleSheet->ownerDocument();
   LocalFrame* frame = document ? document->frame() : nullptr;
-
+  String text;
+  getText(&text);
   std::unique_ptr<protocol::CSS::CSSStyleSheetHeader> result =
       protocol::CSS::CSSStyleSheetHeader::create()
           .setStyleSheetId(id())
           .setOrigin(m_origin)
           .setDisabled(styleSheet->disabled())
           .setSourceURL(url())
           .setTitle(styleSheet->title())
           .setFrameId(frame ? IdentifiersFactory::frameId(frame) : "")
           .setIsInline(styleSheet->isInline() && !startsAtZero())
           .setStartLine(
               styleSheet->startPositionInSource().m_line.zeroBasedInt())
           .setStartColumn(
               styleSheet->startPositionInSource().m_column.zeroBasedInt())
+          .setLength(text.length())
           .build();
 
   if (hasSourceURL())
     result->setHasSourceURL(true);
 
   if (styleSheet->ownerNode())
     result->setOwnerNode(DOMNodeIds::idForNode(styleSheet->ownerNode()));
 
   String sourceMapURLValue = sourceMapURL();
   if (!sourceMapURLValue.isEmpty())
@@ skipping 483 matching lines @@
   return m_element->getAttribute("style").getString();
 }
 
 DEFINE_TRACE(InspectorStyleSheetForInlineStyle) {
   visitor->trace(m_element);
   visitor->trace(m_inspectorStyle);
   InspectorStyleSheetBase::trace(visitor);
 }
 
 }  // namespace blink