DevTools: remove illusionary caching from String.prototype.lineEndings

third_party/WebKit/LayoutTests/http/tests/inspector/debugger-test.js

Index: third_party/WebKit/LayoutTests/http/tests/inspector/debugger-test.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/inspector/debugger-test.js b/third_party/WebKit/LayoutTests/http/tests/inspector/debugger-test.js
index d7ca10400366f84b293fa84c4d9a0f2907c3627f..0887c74153910dfb0b5f9777d23cfad1b7e75871 100644
--- a/third_party/WebKit/LayoutTests/http/tests/inspector/debugger-test.js
+++ b/third_party/WebKit/LayoutTests/http/tests/inspector/debugger-test.js
@@ -514,9 +514,9 @@ InspectorTest.createScriptMock = function(url, startLine, startColumn, isContent
     target = target || WebInspector.targetManager.mainTarget();
     var debuggerModel = WebInspector.DebuggerModel.fromTarget(target);
     var scriptId = ++InspectorTest._lastScriptId + "";
-    var lineCount = source.lineEndings().length;
+    var lineCount = source.computeLineEndings().length;
     var endLine = startLine + lineCount - 1;
-    var endColumn = lineCount === 1 ? startColumn + source.length : source.length - source.lineEndings()[lineCount - 2];
+    var endColumn = lineCount === 1 ? startColumn + source.length : source.length - source.computeLineEndings()[lineCount - 2];
     var hasSourceURL = !!source.match(/\/\/#\ssourceURL=\s*(\S*?)\s*$/m) || !!source.match(/\/\/@\ssourceURL=\s*(\S*?)\s*$/m);
     var script = new WebInspector.Script(debuggerModel, scriptId, url, startLine, startColumn, endLine, endColumn, 0, "", isContentScript, false, false, undefined, hasSourceURL);
     script.requestContent = function()