DevTools: disable "lineWiseCopyCut" CodeMirror option.

third_party/WebKit/Source/devtools/front_end/source_frame/CodeMirrorUtils.js

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 114 matching lines @@
     {
         var element = editingContext.element;
         var config = editingContext.config;
         editingContext.cssLoadView = new WebInspector.CodeMirrorCSSLoadView();
         editingContext.cssLoadView.show(element);
         WebInspector.setCurrentFocusElement(element);
         element.addEventListener("copy", this._consumeCopy, false);
         var codeMirror = new window.CodeMirror(element, {
             mode: config.mode,
             lineWrapping: config.lineWrapping,
+            lineWiseCopyCut: false,
             smartIndent: config.smartIndent,
             autofocus: true,
             theme: config.theme,
             value: config.initialValue
         });
         codeMirror.getWrapperElement().classList.add("source-code");
         codeMirror.on("cursorActivity", function(cm) {
             cm.display.cursorDiv.scrollIntoViewIfNeeded(false);
         });
         editingContext.codeMirror = codeMirror;
@@ skipping 86 matching lines @@
         return;
     var backgroundColor = InspectorFrontendHost.getSelectionBackgroundColor();
     var backgroundColorRule = backgroundColor ? ".CodeMirror .CodeMirror-selected { background-color: " + backgroundColor + ";}" : "";
     var foregroundColor = InspectorFrontendHost.getSelectionForegroundColor();
     var foregroundColorRule = foregroundColor ? ".CodeMirror .CodeMirror-selectedtext:not(.CodeMirror-persist-highlight) { color: " + foregroundColor + "!important;}" : "";
     var style = createElement("style");
     if (foregroundColorRule || backgroundColorRule)
         style.textContent = backgroundColorRule + foregroundColorRule;
     element.appendChild(style);
 }