Run tools/clang-format-js on chrome/browser/resources/net_internals

chrome/browser/resources/net_internals/log_view_painter.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // TODO(eroman): put these methods into a namespace.
 
 var createLogEntryTablePrinter;
 var proxySettingsToString;
 var stripPrivacyInfo;
 
 // Start of anonymous namespace.
 (function() {
-'use strict';
-
-function canCollapseBeginWithEnd(beginEntry) {
-  return beginEntry &&
-         beginEntry.isBegin() &&
-         beginEntry.end &&
-         beginEntry.end.index == beginEntry.index + 1 &&
-         (!beginEntry.orig.params || !beginEntry.end.orig.params);
-}
-
-/**
- * Creates a TablePrinter for use by the above two functions.  baseTime is
- * the time relative to which other times are displayed.
- */
-createLogEntryTablePrinter = function(logEntries, privacyStripping,
-                                      baseTime, logCreationTime) {
-  var entries = LogGroupEntry.createArrayFrom(logEntries);
-  var tablePrinter = new TablePrinter();
-  var parameterOutputter = new ParameterOutputter(tablePrinter);
-
-  if (entries.length == 0)
+  'use strict';
+
+  function canCollapseBeginWithEnd(beginEntry) {
+    return beginEntry && beginEntry.isBegin() && beginEntry.end &&
+        beginEntry.end.index == beginEntry.index + 1 &&
+        (!beginEntry.orig.params || !beginEntry.end.orig.params);
+  }
+
+  /**
+   * Creates a TablePrinter for use by the above two functions.  baseTime is
+   * the time relative to which other times are displayed.
+   */
+  createLogEntryTablePrinter = function(
+      logEntries, privacyStripping, baseTime, logCreationTime) {
+    var entries = LogGroupEntry.createArrayFrom(logEntries);
+    var tablePrinter = new TablePrinter();
+    var parameterOutputter = new ParameterOutputter(tablePrinter);
+
+    if (entries.length == 0)
+      return tablePrinter;
+
+    var startTime = timeutil.convertTimeTicksToTime(entries[0].orig.time);
+
+    for (var i = 0; i < entries.length; ++i) {
+      var entry = entries[i];
+
+      // Avoid printing the END for a BEGIN that was immediately before, unless
+      // both have extra parameters.
+      if (!entry.isEnd() || !canCollapseBeginWithEnd(entry.begin)) {
+        var entryTime = timeutil.convertTimeTicksToTime(entry.orig.time);
+        addRowWithTime(
+            tablePrinter, entryTime - baseTime, startTime - baseTime);
+
+        for (var j = entry.getDepth(); j > 0; --j)
+          tablePrinter.addCell('  ');
+
+        var eventText = getTextForEvent(entry);
+        // Get the elapsed time, and append it to the event text.
+        if (entry.isBegin()) {
+          var dt = '?';
+          // Definite time.
+          if (entry.end) {
+            dt = entry.end.orig.time - entry.orig.time;
+          } else if (logCreationTime != undefined) {
+            dt = (logCreationTime - entryTime) + '+';
+          }
+          eventText += '  [dt=' + dt + ']';
+        }
+
+        var mainCell = tablePrinter.addCell(eventText);
+        mainCell.allowOverflow = true;
+      }
+
+      // Output the extra parameters.
+      if (typeof entry.orig.params == 'object') {
+        // Those 5 skipped cells are: two for "t=", and three for "st=".
+        tablePrinter.setNewRowCellIndent(5 + entry.getDepth());
+        writeParameters(entry.orig, privacyStripping, parameterOutputter);
+
+        tablePrinter.setNewRowCellIndent(0);
+      }
+    }
+
+    // If viewing a saved log file, add row with just the time the log was
+    // created, if the event never completed.
+    var lastEntry = entries[entries.length - 1];
+    // If the last entry has a non-zero depth or is a begin event, the source is
+    // still active.
+    var isSourceActive = lastEntry.getDepth() != 0 || lastEntry.isBegin();
+    if (logCreationTime != undefined && isSourceActive) {
+      addRowWithTime(
+          tablePrinter, logCreationTime - baseTime, startTime - baseTime);
+    }
+
     return tablePrinter;
-
-  var startTime = timeutil.convertTimeTicksToTime(entries[0].orig.time);
-
-  for (var i = 0; i < entries.length; ++i) {
-    var entry = entries[i];
-
-    // Avoid printing the END for a BEGIN that was immediately before, unless
-    // both have extra parameters.
-    if (!entry.isEnd() || !canCollapseBeginWithEnd(entry.begin)) {
-      var entryTime = timeutil.convertTimeTicksToTime(entry.orig.time);
-      addRowWithTime(tablePrinter, entryTime - baseTime, startTime - baseTime);
-
-      for (var j = entry.getDepth(); j > 0; --j)
-        tablePrinter.addCell('  ');
-
-      var eventText = getTextForEvent(entry);
-      // Get the elapsed time, and append it to the event text.
-      if (entry.isBegin()) {
-        var dt = '?';
-        // Definite time.
-        if (entry.end) {
-          dt = entry.end.orig.time - entry.orig.time;
-        } else if (logCreationTime != undefined) {
-          dt = (logCreationTime - entryTime) + '+';
+  };
+
+  /**
+   * Adds a new row to the given TablePrinter, and adds five cells containing
+   * information about the time an event occured.
+   * Format is '[t=<time of the event in ms>] [st=<ms since the source
+   * started>]'.
+   * @param {TablePrinter} tablePrinter The table printer to add the cells to.
+   * @param {number} eventTime The time the event occured, in milliseconds,
+   *     relative to some base time.
+   * @param {number} startTime The time the first event for the source occured,
+   *     relative to the same base time as eventTime.
+   */
+  function addRowWithTime(tablePrinter, eventTime, startTime) {
+    tablePrinter.addRow();
+    tablePrinter.addCell('t=');
+    var tCell = tablePrinter.addCell(eventTime);
+    tCell.alignRight = true;
+    tablePrinter.addCell(' [st=');
+    var stCell = tablePrinter.addCell(eventTime - startTime);
+    stCell.alignRight = true;
+    tablePrinter.addCell('] ');
+  }
+
+  /**
+   * |hexString| must be a string of hexadecimal characters with no whitespace,
+   * whose length is a multiple of two.  Writes multiple lines to |out| with
+   * the hexadecimal characters from |hexString| on the left, in groups of
+   * two, and their corresponding ASCII characters on the right.
+   *
+   * 16 bytes will be placed on each line of the output string, split into two
+   * columns of 8.
+   */
+  function writeHexString(hexString, out) {
+    var asciiCharsPerLine = 16;
+    // Number of transferred bytes in a line of output.  Length of a
+    // line is roughly 4 times larger.
+    var hexCharsPerLine = 2 * asciiCharsPerLine;
+    for (var i = 0; i < hexString.length; i += hexCharsPerLine) {
+      var hexLine = '';
+      var asciiLine = '';
+      for (var j = i; j < i + hexCharsPerLine && j < hexString.length; j += 2) {
+        // Split into two columns of 8 bytes each.
+        if (j == i + hexCharsPerLine / 2)
+          hexLine += ' ';
+        var hex = hexString.substr(j, 2);
+        hexLine += hex + ' ';
+        var charCode = parseInt(hex, 16);
+        // For ASCII codes 32 though 126, display the corresponding
+        // characters.  Use a space for nulls, and a period for
+        // everything else.
+        if (charCode >= 0x20 && charCode <= 0x7E) {
+          asciiLine += String.fromCharCode(charCode);
+        } else if (charCode == 0x00) {
+          asciiLine += ' ';
+        } else {
+          asciiLine += '.';
         }
-        eventText += '  [dt=' + dt + ']';
-      }
-
-      var mainCell = tablePrinter.addCell(eventText);
-      mainCell.allowOverflow = true;
-    }
-
-    // Output the extra parameters.
-    if (typeof entry.orig.params == 'object') {
-      // Those 5 skipped cells are: two for "t=", and three for "st=".
-      tablePrinter.setNewRowCellIndent(5 + entry.getDepth());
-      writeParameters(entry.orig, privacyStripping, parameterOutputter);
-
-      tablePrinter.setNewRowCellIndent(0);
-    }
-  }
-
-  // If viewing a saved log file, add row with just the time the log was
-  // created, if the event never completed.
-  var lastEntry = entries[entries.length - 1];
-  // If the last entry has a non-zero depth or is a begin event, the source is
-  // still active.
-  var isSourceActive = lastEntry.getDepth() != 0 || lastEntry.isBegin();
-  if (logCreationTime != undefined && isSourceActive) {
-    addRowWithTime(tablePrinter,
-                   logCreationTime - baseTime,
-                   startTime - baseTime);
-  }
-
-  return tablePrinter;
-};
-
-/**
- * Adds a new row to the given TablePrinter, and adds five cells containing
- * information about the time an event occured.
- * Format is '[t=<time of the event in ms>] [st=<ms since the source started>]'.
- * @param {TablePrinter} tablePrinter The table printer to add the cells to.
- * @param {number} eventTime The time the event occured, in milliseconds,
- *     relative to some base time.
- * @param {number} startTime The time the first event for the source occured,
- *     relative to the same base time as eventTime.
- */
-function addRowWithTime(tablePrinter, eventTime, startTime) {
-  tablePrinter.addRow();
-  tablePrinter.addCell('t=');
-  var tCell = tablePrinter.addCell(eventTime);
-  tCell.alignRight = true;
-  tablePrinter.addCell(' [st=');
-  var stCell = tablePrinter.addCell(eventTime - startTime);
-  stCell.alignRight = true;
-  tablePrinter.addCell('] ');
-}
-
-/**
- * |hexString| must be a string of hexadecimal characters with no whitespace,
- * whose length is a multiple of two.  Writes multiple lines to |out| with
- * the hexadecimal characters from |hexString| on the left, in groups of
- * two, and their corresponding ASCII characters on the right.
- *
- * 16 bytes will be placed on each line of the output string, split into two
- * columns of 8.
- */
-function writeHexString(hexString, out) {
-  var asciiCharsPerLine = 16;
-  // Number of transferred bytes in a line of output.  Length of a
-  // line is roughly 4 times larger.
-  var hexCharsPerLine = 2 * asciiCharsPerLine;
-  for (var i = 0; i < hexString.length; i += hexCharsPerLine) {
-    var hexLine = '';
-    var asciiLine = '';
-    for (var j = i; j < i + hexCharsPerLine && j < hexString.length; j += 2) {
-      // Split into two columns of 8 bytes each.
-      if (j == i + hexCharsPerLine / 2)
-        hexLine += ' ';
-      var hex = hexString.substr(j, 2);
-      hexLine += hex + ' ';
-      var charCode = parseInt(hex, 16);
-      // For ASCII codes 32 though 126, display the corresponding
-      // characters.  Use a space for nulls, and a period for
-      // everything else.
-      if (charCode >= 0x20 && charCode <= 0x7E) {
-        asciiLine += String.fromCharCode(charCode);
-      } else if (charCode == 0x00) {
-        asciiLine += ' ';
-      } else {
-        asciiLine += '.';
-      }
-    }
-
-    // Make the ASCII text for the last line of output align with the previous
-    // lines.
-    hexLine += makeRepeatedString(' ',
-                                  3 * asciiCharsPerLine + 1 - hexLine.length);
-    out.writeLine('   ' + hexLine + '  ' + asciiLine);
-  }
-}
-
-/**
- * Wrapper around a TablePrinter to simplify outputting lines of text for event
- * parameters.
- */
-var ParameterOutputter = (function() {
-  /**
-   * @constructor
-   */
-  function ParameterOutputter(tablePrinter) {
-    this.tablePrinter_ = tablePrinter;
-  }
-
-  ParameterOutputter.prototype = {
+      }
+
+      // Make the ASCII text for the last line of output align with the previous
+      // lines.
+      hexLine +=
+          makeRepeatedString(' ', 3 * asciiCharsPerLine + 1 - hexLine.length);
+      out.writeLine('   ' + hexLine + '  ' + asciiLine);
+    }
+  }
+
+  /**
+   * Wrapper around a TablePrinter to simplify outputting lines of text for
+   * event
+   * parameters.
+   */
+  var ParameterOutputter = (function() {
     /**
-     * Outputs a single line.
+     * @constructor
      */
-    writeLine: function(line) {
-      this.tablePrinter_.addRow();
-      var cell = this.tablePrinter_.addCell(line);
-      cell.allowOverflow = true;
-      return cell;
-    },
-
-    /**
-     * Outputs a key=value line which looks like:
-     *
-     *   --> key = value
-     */
-    writeArrowKeyValue: function(key, value, link) {
-      var cell = this.writeLine(kArrow + key + ' = ' + value);
-      cell.link = link;
-    },
-
-    /**
-     * Outputs a key= line which looks like:
-     *
-     *   --> key =
-     */
-    writeArrowKey: function(key) {
-      this.writeLine(kArrow + key + ' =');
-    },
-
-    /**
-     * Outputs multiple lines, each indented by numSpaces.
-     * For instance if numSpaces=8 it might look like this:
-     *
-     *         line 1
-     *         line 2
-     *         line 3
-     */
-    writeSpaceIndentedLines: function(numSpaces, lines) {
-      var prefix = makeRepeatedString(' ', numSpaces);
-      for (var i = 0; i < lines.length; ++i)
-        this.writeLine(prefix + lines[i]);
-    },
-
-    /**
-     * Outputs multiple lines such that the first line has
-     * an arrow pointing at it, and subsequent lines
-     * align with the first one. For example:
-     *
-     *   --> line 1
-     *       line 2
-     *       line 3
-     */
-    writeArrowIndentedLines: function(lines) {
-      if (lines.length == 0)
-        return;
-
-      this.writeLine(kArrow + lines[0]);
-
-      for (var i = 1; i < lines.length; ++i)
-        this.writeLine(kArrowIndentation + lines[i]);
-    }
-  };
-
-  var kArrow = ' --> ';
-  var kArrowIndentation = '     ';
-
-  return ParameterOutputter;
-})();  // end of ParameterOutputter
-
-/**
- * Formats the parameters for |entry| and writes them to |out|.
- * Certain event types have custom pretty printers. Everything else will
- * default to a JSON-like format.
- */
-function writeParameters(entry, privacyStripping, out) {
-  if (privacyStripping) {
-    // If privacy stripping is enabled, remove data as needed.
-    entry = stripPrivacyInfo(entry);
-  } else {
-    // If headers are in an object, convert them to an array for better display.
-    entry = reformatHeaders(entry);
-  }
-
-  // Use any parameter writer available for this event type.
-  var paramsWriter = getParameterWriterForEventType(entry.type);
-  var consumedParams = {};
-  if (paramsWriter)
-    paramsWriter(entry, out, consumedParams);
-
-  // Write any un-consumed parameters.
-  for (var k in entry.params) {
-    if (consumedParams[k])
-      continue;
-    defaultWriteParameter(k, entry.params[k], out);
-  }
-}
-
-/**
+    function ParameterOutputter(tablePrinter) {
+      this.tablePrinter_ = tablePrinter;
+    }
+
+    ParameterOutputter.prototype = {
+      /**
+       * Outputs a single line.
+       */
+      writeLine: function(line) {
+        this.tablePrinter_.addRow();
+        var cell = this.tablePrinter_.addCell(line);
+        cell.allowOverflow = true;
+        return cell;
+      },
+
+      /**
+       * Outputs a key=value line which looks like:
+       *
+       *   --> key = value
+       */
+      writeArrowKeyValue: function(key, value, link) {
+        var cell = this.writeLine(kArrow + key + ' = ' + value);
+        cell.link = link;
+      },
+
+      /**
+       * Outputs a key= line which looks like:
+       *
+       *   --> key =
+       */
+      writeArrowKey: function(key) {
+        this.writeLine(kArrow + key + ' =');
+      },
+
+      /**
+       * Outputs multiple lines, each indented by numSpaces.
+       * For instance if numSpaces=8 it might look like this:
+       *
+       *         line 1
+       *         line 2
+       *         line 3
+       */
+      writeSpaceIndentedLines: function(numSpaces, lines) {
+        var prefix = makeRepeatedString(' ', numSpaces);
+        for (var i = 0; i < lines.length; ++i)
+          this.writeLine(prefix + lines[i]);
+      },
+
+      /**
+       * Outputs multiple lines such that the first line has
+       * an arrow pointing at it, and subsequent lines
+       * align with the first one. For example:
+       *
+       *   --> line 1
+       *       line 2
+       *       line 3
+       */
+      writeArrowIndentedLines: function(lines) {
+        if (lines.length == 0)
+          return;
+
+        this.writeLine(kArrow + lines[0]);
+
+        for (var i = 1; i < lines.length; ++i)
+          this.writeLine(kArrowIndentation + lines[i]);
+      }
+    };
+
+    var kArrow = ' --> ';
+    var kArrowIndentation = '     ';
+
+    return ParameterOutputter;
+  })();  // end of ParameterOutputter
+
+  /**
+   * Formats the parameters for |entry| and writes them to |out|.
+   * Certain event types have custom pretty printers. Everything else will
+   * default to a JSON-like format.
+   */
+  function writeParameters(entry, privacyStripping, out) {
+    if (privacyStripping) {
+      // If privacy stripping is enabled, remove data as needed.
+      entry = stripPrivacyInfo(entry);
+    } else {
+      // If headers are in an object, convert them to an array for better
+      // display.
+      entry = reformatHeaders(entry);
+    }
+
+    // Use any parameter writer available for this event type.
+    var paramsWriter = getParameterWriterForEventType(entry.type);
+    var consumedParams = {};
+    if (paramsWriter)
+      paramsWriter(entry, out, consumedParams);
+
+    // Write any un-consumed parameters.
+    for (var k in entry.params) {
+      if (consumedParams[k])
+        continue;
+      defaultWriteParameter(k, entry.params[k], out);
+    }
+  }
+
+  /**
  * Finds a writer to format the parameters for events of type |eventType|.
  *
  * @return {function} The returned function "writer" can be invoked
  *                    as |writer(entry, writer, consumedParams)|. It will
  *                    output the parameters of |entry| to |out|, and fill
  *                    |consumedParams| with the keys of the parameters
  *                    consumed. If no writer is available for |eventType| then
  *                    returns null.
  */
-function getParameterWriterForEventType(eventType) {
-  switch (eventType) {
-    case EventType.HTTP_TRANSACTION_SEND_REQUEST_HEADERS:
-    case EventType.HTTP_TRANSACTION_SEND_TUNNEL_HEADERS:
-    case EventType.TYPE_HTTP_CACHE_CALLER_REQUEST_HEADERS:
-      return writeParamsForRequestHeaders;
-
-    case EventType.PROXY_CONFIG_CHANGED:
-      return writeParamsForProxyConfigChanged;
-
-    case EventType.CERT_VERIFIER_JOB:
-    case EventType.SSL_CERTIFICATES_RECEIVED:
-      return writeParamsForCertificates;
-    case EventType.CERT_CT_COMPLIANCE_CHECKED:
-    case EventType.EV_CERT_CT_COMPLIANCE_CHECKED:
-      return writeParamsForCheckedCertificates;
-
-    case EventType.SSL_VERSION_FALLBACK:
-      return writeParamsForSSLVersionFallback;
-  }
-  return null;
-}
-
-/**
- * Default parameter writer that outputs a visualization of field named |key|
- * with value |value| to |out|.
- */
-function defaultWriteParameter(key, value, out) {
-  if (key == 'headers' && value instanceof Array) {
-    out.writeArrowIndentedLines(value);
-    return;
-  }
-
-  // For transferred bytes, display the bytes in hex and ASCII.
-  if (key == 'hex_encoded_bytes' && typeof value == 'string') {
-    out.writeArrowKey(key);
-    writeHexString(value, out);
-    return;
-  }
-
-  // Handle source_dependency entries - add link and map source type to
-  // string.
-  if (key == 'source_dependency' && typeof value == 'object') {
-    var link = '#events&s=' + value.id;
-    var valueStr = value.id + ' (' + EventSourceTypeNames[value.type] + ')';
-    out.writeArrowKeyValue(key, valueStr, link);
-    return;
-  }
-
-  if (key == 'net_error' && typeof value == 'number') {
-    var valueStr = value + ' (' + netErrorToString(value) + ')';
-    out.writeArrowKeyValue(key, valueStr);
-    return;
-  }
-
-  if (key == 'quic_error' && typeof value == 'number') {
-    var valueStr = value + ' (' + quicErrorToString(value) + ')';
-    out.writeArrowKeyValue(key, valueStr);
-    return;
-  }
-
-  if (key == 'quic_crypto_handshake_message' && typeof value == 'string') {
-    var lines = value.split('\n');
-    out.writeArrowIndentedLines(lines);
-    return;
-  }
-
-  if (key == 'quic_rst_stream_error' && typeof value == 'number') {
-    var valueStr = value + ' (' + quicRstStreamErrorToString(value) + ')';
-    out.writeArrowKeyValue(key, valueStr);
-    return;
-  }
-
-  if (key == 'load_flags' && typeof value == 'number') {
-    var valueStr = value + ' (' + getLoadFlagSymbolicString(value) + ')';
-    out.writeArrowKeyValue(key, valueStr);
-    return;
-  }
-
-  if (key == 'load_state' && typeof value == 'number') {
-    var valueStr = value + ' (' + getKeyWithValue(LoadState, value) + ')';
-    out.writeArrowKeyValue(key, valueStr);
-    return;
-  }
-
-  if (key == 'sdch_problem_code' && typeof value == 'number') {
-    var valueStr = value + ' (' + sdchProblemCodeToString(value) + ')';
-    out.writeArrowKeyValue(key, valueStr);
-    return;
-  }
-
-  // Otherwise just default to JSON formatting of the value.
-  out.writeArrowKeyValue(key, JSON.stringify(value));
-}
-
-/**
- * Returns the set of LoadFlags that make up the integer |loadFlag|.
- * For example: getLoadFlagSymbolicString(
- */
-function getLoadFlagSymbolicString(loadFlag) {
-
-  return getSymbolicString(loadFlag, LoadFlag,
-                           getKeyWithValue(LoadFlag, loadFlag));
-}
-
-/**
- * Returns the set of CertStatusFlags that make up the integer |certStatusFlag|
- */
-function getCertStatusFlagSymbolicString(certStatusFlag) {
-  return getSymbolicString(certStatusFlag, CertStatusFlag, '');
-}
-
-/**
- * Returns a string representing the flags composing the given bitmask.
- */
-function getSymbolicString(bitmask, valueToName, zeroName) {
-  var matchingFlagNames = [];
-
-  for (var k in valueToName) {
-    if (bitmask & valueToName[k])
-      matchingFlagNames.push(k);
-  }
-
-  // If no flags were matched, returns a special value.
-  if (matchingFlagNames.length == 0)
-    return zeroName;
-
-  return matchingFlagNames.join(' | ');
-}
-
-/**
- * Converts an SSL version number to a textual representation.
- * For instance, SSLVersionNumberToName(0x0301) returns 'TLS 1.0'.
- */
-function SSLVersionNumberToName(version) {
-  if ((version & 0xFFFF) != version) {
-    // If the version number is more than 2 bytes long something is wrong.
-    // Print it as hex.
-    return 'SSL 0x' + version.toString(16);
-  }
-
-  // See if it is a known TLS name.
-  var kTLSNames = {
-    0x0301: 'TLS 1.0',
-    0x0302: 'TLS 1.1',
-    0x0303: 'TLS 1.2'
-  };
-  var name = kTLSNames[version];
-  if (name)
-    return name;
-
-  // Otherwise label it as an SSL version.
-  var major = (version & 0xFF00) >> 8;
-  var minor = version & 0x00FF;
-
-  return 'SSL ' + major + '.' + minor;
-}
-
-/**
- * TODO(eroman): get rid of this, as it is only used by 1 callsite.
- *
- * Indent |lines| by |start|.
- *
- * For example, if |start| = ' -> ' and |lines| = ['line1', 'line2', 'line3']
- * the output will be:
- *
- *   " -> line1\n" +
- *   "    line2\n" +
- *   "    line3"
- */
-function indentLines(start, lines) {
-  return start + lines.join('\n' + makeRepeatedString(' ', start.length));
-}
-
-/**
- * If entry.param.headers exists and is an object other than an array, converts
- * it into an array and returns a new entry.  Otherwise, just returns the
- * original entry.
- */
-function reformatHeaders(entry) {
-  // If there are no headers, or it is not an object other than an array,
-  // return |entry| without modification.
-  if (!entry.params || entry.params.headers === undefined ||
-      typeof entry.params.headers != 'object' ||
-      entry.params.headers instanceof Array) {
+  function getParameterWriterForEventType(eventType) {
+    switch (eventType) {
+      case EventType.HTTP_TRANSACTION_SEND_REQUEST_HEADERS:
+      case EventType.HTTP_TRANSACTION_SEND_TUNNEL_HEADERS:
+      case EventType.TYPE_HTTP_CACHE_CALLER_REQUEST_HEADERS:
+        return writeParamsForRequestHeaders;
+
+      case EventType.PROXY_CONFIG_CHANGED:
+        return writeParamsForProxyConfigChanged;
+
+      case EventType.CERT_VERIFIER_JOB:
+      case EventType.SSL_CERTIFICATES_RECEIVED:
+        return writeParamsForCertificates;
+      case EventType.CERT_CT_COMPLIANCE_CHECKED:
+      case EventType.EV_CERT_CT_COMPLIANCE_CHECKED:
+        return writeParamsForCheckedCertificates;
+
+      case EventType.SSL_VERSION_FALLBACK:
+        return writeParamsForSSLVersionFallback;
+    }
+    return null;
+  }
+
+  /**
+   * Default parameter writer that outputs a visualization of field named |key|
+   * with value |value| to |out|.
+   */
+  function defaultWriteParameter(key, value, out) {
+    if (key == 'headers' && value instanceof Array) {
+      out.writeArrowIndentedLines(value);
+      return;
+    }
+
+    // For transferred bytes, display the bytes in hex and ASCII.
+    if (key == 'hex_encoded_bytes' && typeof value == 'string') {
+      out.writeArrowKey(key);
+      writeHexString(value, out);
+      return;
+    }
+
+    // Handle source_dependency entries - add link and map source type to
+    // string.
+    if (key == 'source_dependency' && typeof value == 'object') {
+      var link = '#events&s=' + value.id;
+      var valueStr = value.id + ' (' + EventSourceTypeNames[value.type] + ')';
+      out.writeArrowKeyValue(key, valueStr, link);
+      return;
+    }
+
+    if (key == 'net_error' && typeof value == 'number') {
+      var valueStr = value + ' (' + netErrorToString(value) + ')';
+      out.writeArrowKeyValue(key, valueStr);
+      return;
+    }
+
+    if (key == 'quic_error' && typeof value == 'number') {
+      var valueStr = value + ' (' + quicErrorToString(value) + ')';
+      out.writeArrowKeyValue(key, valueStr);
+      return;
+    }
+
+    if (key == 'quic_crypto_handshake_message' && typeof value == 'string') {
+      var lines = value.split('\n');
+      out.writeArrowIndentedLines(lines);
+      return;
+    }
+
+    if (key == 'quic_rst_stream_error' && typeof value == 'number') {
+      var valueStr = value + ' (' + quicRstStreamErrorToString(value) + ')';
+      out.writeArrowKeyValue(key, valueStr);
+      return;
+    }
+
+    if (key == 'load_flags' && typeof value == 'number') {
+      var valueStr = value + ' (' + getLoadFlagSymbolicString(value) + ')';
+      out.writeArrowKeyValue(key, valueStr);
+      return;
+    }
+
+    if (key == 'load_state' && typeof value == 'number') {
+      var valueStr = value + ' (' + getKeyWithValue(LoadState, value) + ')';
+      out.writeArrowKeyValue(key, valueStr);
+      return;
+    }
+
+    if (key == 'sdch_problem_code' && typeof value == 'number') {
+      var valueStr = value + ' (' + sdchProblemCodeToString(value) + ')';
+      out.writeArrowKeyValue(key, valueStr);
+      return;
+    }
+
+    // Otherwise just default to JSON formatting of the value.
+    out.writeArrowKeyValue(key, JSON.stringify(value));
+  }
+
+  /**
+   * Returns the set of LoadFlags that make up the integer |loadFlag|.
+   * For example: getLoadFlagSymbolicString(
+   */
+  function getLoadFlagSymbolicString(loadFlag) {
+    return getSymbolicString(
+        loadFlag, LoadFlag, getKeyWithValue(LoadFlag, loadFlag));
+  }
+
+  /**
+   * Returns the set of CertStatusFlags that make up the integer
+   * |certStatusFlag|
+   */
+  function getCertStatusFlagSymbolicString(certStatusFlag) {
+    return getSymbolicString(certStatusFlag, CertStatusFlag, '');
+  }
+
+  /**
+   * Returns a string representing the flags composing the given bitmask.
+   */
+  function getSymbolicString(bitmask, valueToName, zeroName) {
+    var matchingFlagNames = [];
+
+    for (var k in valueToName) {
+      if (bitmask & valueToName[k])
+        matchingFlagNames.push(k);
+    }
+
+    // If no flags were matched, returns a special value.
+    if (matchingFlagNames.length == 0)
+      return zeroName;
+
+    return matchingFlagNames.join(' | ');
+  }
+
+  /**
+   * Converts an SSL version number to a textual representation.
+   * For instance, SSLVersionNumberToName(0x0301) returns 'TLS 1.0'.
+   */
+  function SSLVersionNumberToName(version) {
+    if ((version & 0xFFFF) != version) {
+      // If the version number is more than 2 bytes long something is wrong.
+      // Print it as hex.
+      return 'SSL 0x' + version.toString(16);
+    }
+
+    // See if it is a known TLS name.
+    var kTLSNames = {0x0301: 'TLS 1.0', 0x0302: 'TLS 1.1', 0x0303: 'TLS 1.2'};
+    var name = kTLSNames[version];
+    if (name)
+      return name;
+
+    // Otherwise label it as an SSL version.
+    var major = (version & 0xFF00) >> 8;
+    var minor = version & 0x00FF;
+
+    return 'SSL ' + major + '.' + minor;
+  }
+
+  /**
+   * TODO(eroman): get rid of this, as it is only used by 1 callsite.
+   *
+   * Indent |lines| by |start|.
+   *
+   * For example, if |start| = ' -> ' and |lines| = ['line1', 'line2', 'line3']
+   * the output will be:
+   *
+   *   " -> line1\n" +
+   *   "    line2\n" +
+   *   "    line3"
+   */
+  function indentLines(start, lines) {
+    return start + lines.join('\n' + makeRepeatedString(' ', start.length));
+  }
+
+  /**
+   * If entry.param.headers exists and is an object other than an array,
+   * converts
+   * it into an array and returns a new entry.  Otherwise, just returns the
+   * original entry.
+   */
+  function reformatHeaders(entry) {
+    // If there are no headers, or it is not an object other than an array,
+    // return |entry| without modification.
+    if (!entry.params || entry.params.headers === undefined ||
+        typeof entry.params.headers != 'object' ||
+        entry.params.headers instanceof Array) {
+      return entry;
+    }
+
+    // Duplicate the top level object, and |entry.params|, so the original
+    // object
+    // will not be modified.
+    entry = shallowCloneObject(entry);
+    entry.params = shallowCloneObject(entry.params);
+
+    // Convert headers to an array.
+    var headers = [];
+    for (var key in entry.params.headers)
+      headers.push(key + ': ' + entry.params.headers[key]);
+    entry.params.headers = headers;
+
     return entry;
   }
 
-  // Duplicate the top level object, and |entry.params|, so the original object
-  // will not be modified.
-  entry = shallowCloneObject(entry);
-  entry.params = shallowCloneObject(entry.params);
-
-  // Convert headers to an array.
-  var headers = [];
-  for (var key in entry.params.headers)
-    headers.push(key + ': ' + entry.params.headers[key]);
-  entry.params.headers = headers;
-
-  return entry;
-}
-
-/**
- * Removes a cookie or unencrypted login information from a single HTTP header
- * line, if present, and returns the modified line.  Otherwise, just returns
- * the original line.
- *
- * Note: this logic should be kept in sync with
- * net::ElideHeaderValueForNetLog in net/http/http_log_util.cc.
- */
-function stripCookieOrLoginInfo(line) {
-  var patterns = [
+  /**
+   * Removes a cookie or unencrypted login information from a single HTTP header
+   * line, if present, and returns the modified line.  Otherwise, just returns
+   * the original line.
+   *
+   * Note: this logic should be kept in sync with
+   * net::ElideHeaderValueForNetLog in net/http/http_log_util.cc.
+   */
+  function stripCookieOrLoginInfo(line) {
+    var patterns = [
       // Cookie patterns
-      /^set-cookie: /i,
-      /^set-cookie2: /i,
-      /^cookie: /i,
+      /^set-cookie: /i, /^set-cookie2: /i, /^cookie: /i,
 
       // Unencrypted authentication patterns
-      /^authorization: \S*\s*/i,
-      /^proxy-authorization: \S*\s*/i];
-
-  // Prefix will hold the first part of the string that contains no private
-  // information.  If null, no part of the string contains private information.
-  var prefix = null;
-  for (var i = 0; i < patterns.length; i++) {
-    var match = patterns[i].exec(line);
-    if (match != null) {
-      prefix = match[0];
-      break;
-    }
-  }
-
-  // Look for authentication information from data received from the server in
-  // multi-round Negotiate authentication.
-  if (prefix === null) {
-    var challengePatterns = [
-        /^www-authenticate: (\S*)\s*/i,
-        /^proxy-authenticate: (\S*)\s*/i];
-    for (var i = 0; i < challengePatterns.length; i++) {
-      var match = challengePatterns[i].exec(line);
-      if (!match)
-        continue;
-
-      // If there's no data after the scheme name, do nothing.
-      if (match[0].length == line.length)
+      /^authorization: \S*\s*/i, /^proxy-authorization: \S*\s*/i
+    ];
+
+    // Prefix will hold the first part of the string that contains no private
+    // information.  If null, no part of the string contains private
+    // information.
+    var prefix = null;
+    for (var i = 0; i < patterns.length; i++) {
+      var match = patterns[i].exec(line);
+      if (match != null) {
+        prefix = match[0];
         break;
-
-      // Ignore lines with commas, as they may contain lists of schemes, and
-      // the information we want to hide is Base64 encoded, so has no commas.
-      if (line.indexOf(',') >= 0)
+      }
+    }
+
+    // Look for authentication information from data received from the server in
+    // multi-round Negotiate authentication.
+    if (prefix === null) {
+      var challengePatterns =
+          [/^www-authenticate: (\S*)\s*/i, /^proxy-authenticate: (\S*)\s*/i];
+      for (var i = 0; i < challengePatterns.length; i++) {
+        var match = challengePatterns[i].exec(line);
+        if (!match)
+          continue;
+
+        // If there's no data after the scheme name, do nothing.
+        if (match[0].length == line.length)
+          break;
+
+        // Ignore lines with commas, as they may contain lists of schemes, and
+        // the information we want to hide is Base64 encoded, so has no commas.
+        if (line.indexOf(',') >= 0)
+          break;
+
+        // Ignore Basic and Digest authentication challenges, as they contain
+        // public information.
+        if (/^basic$/i.test(match[1]) || /^digest$/i.test(match[1]))
+          break;
+
+        prefix = match[0];
         break;
-
-      // Ignore Basic and Digest authentication challenges, as they contain
-      // public information.
-      if (/^basic$/i.test(match[1]) || /^digest$/i.test(match[1]))
-        break;
-
-      prefix = match[0];
-      break;
-    }
-  }
-
-  if (prefix) {
-    var suffix = line.slice(prefix.length);
-    // If private information has already been removed, keep the line as-is.
-    // This is often the case when viewing a loaded log.
-    if (suffix.search(/^\[[0-9]+ bytes were stripped\]$/) == -1) {
-      return prefix + '[' + suffix.length + ' bytes were stripped]';
-    }
-  }
-
-  return line;
-}
-
-/**
- * Remove debug data from HTTP/2 GOAWAY frame due to privacy considerations, see
- * https://httpwg.github.io/specs/rfc7540.html#GOAWAY.
- *
- * Note: this logic should be kept in sync with
- * net::ElideGoAwayDebugDataForNetLog in net/http/http_log_util.cc.
- */
-function stripGoAwayDebugData(value) {
-  return '[' + value.length + ' bytes were stripped]';
-}
-
-/**
- * If |entry| has headers, returns a copy of |entry| with all cookie and
- * unencrypted login text removed.  Otherwise, returns original |entry| object.
- * This is needed so that JSON log dumps can be made without affecting the
- * source data.  Converts headers stored in objects to arrays.
- */
-stripPrivacyInfo = function(entry) {
-  if (!entry.params) {
-    return entry;
-  }
-
-  if (entry.type == EventType.HTTP2_SESSION_GOAWAY &&
-      entry.params.debug_data != undefined) {
+      }
+    }
+
+    if (prefix) {
+      var suffix = line.slice(prefix.length);
+      // If private information has already been removed, keep the line as-is.
+      // This is often the case when viewing a loaded log.
+      if (suffix.search(/^\[[0-9]+ bytes were stripped\]$/) == -1) {
+        return prefix + '[' + suffix.length + ' bytes were stripped]';
+      }
+    }
+
+    return line;
+  }
+
+  /**
+   * Remove debug data from HTTP/2 GOAWAY frame due to privacy considerations,
+   * see
+   * https://httpwg.github.io/specs/rfc7540.html#GOAWAY.
+   *
+   * Note: this logic should be kept in sync with
+   * net::ElideGoAwayDebugDataForNetLog in net/http/http_log_util.cc.
+   */
+  function stripGoAwayDebugData(value) {
+    return '[' + value.length + ' bytes were stripped]';
+  }
+
+  /**
+   * If |entry| has headers, returns a copy of |entry| with all cookie and
+   * unencrypted login text removed.  Otherwise, returns original |entry|
+   * object.
+   * This is needed so that JSON log dumps can be made without affecting the
+   * source data.  Converts headers stored in objects to arrays.
+   */
+  stripPrivacyInfo = function(entry) {
+    if (!entry.params) {
+      return entry;
+    }
+
+    if (entry.type == EventType.HTTP2_SESSION_GOAWAY &&
+        entry.params.debug_data != undefined) {
+      // Duplicate the top level object, and |entry.params|.  All other fields
+      // are
+      // just pointers to the original values, as they won't be modified, other
+      // than |entry.params.debug_data|.
+      entry = shallowCloneObject(entry);
+      entry.params = shallowCloneObject(entry.params);
+      entry.params.debug_data = stripGoAwayDebugData(entry.params.debug_data);
+      return entry;
+    }
+
+    if (entry.params.headers === undefined ||
+        !(entry.params.headers instanceof Object)) {
+      return entry;
+    }
+
+    // Make sure entry's headers are in an array.
+    entry = reformatHeaders(entry);
+
     // Duplicate the top level object, and |entry.params|.  All other fields are
     // just pointers to the original values, as they won't be modified, other
-    // than |entry.params.debug_data|.
+    // than
+    // |entry.params.headers|.
     entry = shallowCloneObject(entry);
     entry.params = shallowCloneObject(entry.params);
-    entry.params.debug_data =
-        stripGoAwayDebugData(entry.params.debug_data);
+
+    entry.params.headers = entry.params.headers.map(stripCookieOrLoginInfo);
     return entry;
-  }
-
-  if (entry.params.headers === undefined ||
-      !(entry.params.headers instanceof Object)) {
-    return entry;
-  }
-
-  // Make sure entry's headers are in an array.
-  entry = reformatHeaders(entry);
-
-  // Duplicate the top level object, and |entry.params|.  All other fields are
-  // just pointers to the original values, as they won't be modified, other than
-  // |entry.params.headers|.
-  entry = shallowCloneObject(entry);
-  entry.params = shallowCloneObject(entry.params);
-
-  entry.params.headers = entry.params.headers.map(stripCookieOrLoginInfo);
-  return entry;
-};
-
-/**
- * Outputs the request header parameters of |entry| to |out|.
- */
-function writeParamsForRequestHeaders(entry, out, consumedParams) {
-  var params = entry.params;
-
-  if (!(typeof params.line == 'string') || !(params.headers instanceof Array)) {
-    // Unrecognized params.
-    return;
-  }
-
-  // Strip the trailing CRLF that params.line contains.
-  var lineWithoutCRLF = params.line.replace(/\r\n$/g, '');
-  out.writeArrowIndentedLines([lineWithoutCRLF].concat(params.headers));
-
-  consumedParams.line = true;
-  consumedParams.headers = true;
-}
-
-function writeCertificateParam(
-    certs_container, out, consumedParams, paramName) {
-  if (certs_container.certificates instanceof Array) {
-    var certs = certs_container.certificates.reduce(
-        function(previous, current) {
-          return previous.concat(current.split('\n'));
-        }, new Array());
-    out.writeArrowKey(paramName);
-    out.writeSpaceIndentedLines(8, certs);
-    consumedParams[paramName] = true;
-  }
-}
-
-/**
- * Outputs the certificate parameters of |entry| to |out|.
- */
-function writeParamsForCertificates(entry, out, consumedParams) {
-  writeCertificateParam(entry.params, out, consumedParams, 'certificates');
-
-  if (typeof(entry.params.verified_cert) == 'object')
-    writeCertificateParam(
-        entry.params.verified_cert, out, consumedParams, 'verified_cert');
-
-  if (typeof(entry.params.cert_status) == 'number') {
-    var valueStr = entry.params.cert_status + ' (' +
-        getCertStatusFlagSymbolicString(entry.params.cert_status) + ')';
-    out.writeArrowKeyValue('cert_status', valueStr);
-    consumedParams.cert_status = true;
-  }
-
-}
-
-function writeParamsForCheckedCertificates(entry, out, consumedParams) {
-  if (typeof(entry.params.certificate) == 'object')
-    writeCertificateParam(
-        entry.params.certificate, out, consumedParams, 'certificate');
-}
-
-/**
- * Outputs the SSL version fallback parameters of |entry| to |out|.
- */
-function writeParamsForSSLVersionFallback(entry, out, consumedParams) {
-  var params = entry.params;
-
-  if (typeof params.version_before != 'number' ||
-      typeof params.version_after != 'number') {
-    // Unrecognized params.
-    return;
-  }
-
-  var line = SSLVersionNumberToName(params.version_before) +
-             ' ==> ' +
-             SSLVersionNumberToName(params.version_after);
-  out.writeArrowIndentedLines([line]);
-
-  consumedParams.version_before = true;
-  consumedParams.version_after = true;
-}
-
-function writeParamsForProxyConfigChanged(entry, out, consumedParams) {
-  var params = entry.params;
-
-  if (typeof params.new_config != 'object') {
-    // Unrecognized params.
-    return;
-  }
-
-  if (typeof params.old_config == 'object') {
-    var oldConfigString = proxySettingsToString(params.old_config);
-    // The previous configuration may not be present in the case of
-    // the initial proxy settings fetch.
-    out.writeArrowKey('old_config');
-
-    out.writeSpaceIndentedLines(8, oldConfigString.split('\n'));
-
-    consumedParams.old_config = true;
-  }
-
-  var newConfigString = proxySettingsToString(params.new_config);
-  out.writeArrowKey('new_config');
-  out.writeSpaceIndentedLines(8, newConfigString.split('\n'));
-
-  consumedParams.new_config = true;
-}
-
-function getTextForEvent(entry) {
-  var text = '';
-
-  if (entry.isBegin() && canCollapseBeginWithEnd(entry)) {
-    // Don't prefix with '+' if we are going to collapse the END event.
-    text = ' ';
-  } else if (entry.isBegin()) {
-    text = '+' + text;
-  } else if (entry.isEnd()) {
-    text = '-' + text;
-  } else {
-    text = ' ';
-  }
-
-  text += EventTypeNames[entry.orig.type];
-  return text;
-}
-
-proxySettingsToString = function(config) {
-  if (!config)
-    return '';
-
-  // TODO(eroman): if |config| has unexpected properties, print it as JSON
-  //               rather than hide them.
-
-  function getProxyListString(proxies) {
-    // Older versions of Chrome would set these values as strings, whereas newer
-    // logs use arrays.
-    // TODO(eroman): This behavior changed in M27. Support for older logs can
-    //               safely be removed circa M29.
-    if (Array.isArray(proxies)) {
-      var listString = proxies.join(', ');
-      if (proxies.length > 1)
-        return '[' + listString + ']';
-      return listString;
-    }
-    return proxies;
-  }
-
-  // The proxy settings specify up to three major fallback choices
-  // (auto-detect, custom pac url, or manual settings).
-  // We enumerate these to a list so we can later number them.
-  var modes = [];
-
-  // Output any automatic settings.
-  if (config.auto_detect)
-    modes.push(['Auto-detect']);
-  if (config.pac_url)
-    modes.push(['PAC script: ' + config.pac_url]);
-
-  // Output any manual settings.
-  if (config.single_proxy || config.proxy_per_scheme) {
-    var lines = [];
-
-    if (config.single_proxy) {
-      lines.push('Proxy server: ' + getProxyListString(config.single_proxy));
-    } else if (config.proxy_per_scheme) {
-      for (var urlScheme in config.proxy_per_scheme) {
-        if (urlScheme != 'fallback') {
-          lines.push('Proxy server for ' + urlScheme.toUpperCase() + ': ' +
-                     getProxyListString(config.proxy_per_scheme[urlScheme]));
+  };
+
+  /**
+   * Outputs the request header parameters of |entry| to |out|.
+   */
+  function writeParamsForRequestHeaders(entry, out, consumedParams) {
+    var params = entry.params;
+
+    if (!(typeof params.line == 'string') ||
+        !(params.headers instanceof Array)) {
+      // Unrecognized params.
+      return;
+    }
+
+    // Strip the trailing CRLF that params.line contains.
+    var lineWithoutCRLF = params.line.replace(/\r\n$/g, '');
+    out.writeArrowIndentedLines([lineWithoutCRLF].concat(params.headers));
+
+    consumedParams.line = true;
+    consumedParams.headers = true;
+  }
+
+  function writeCertificateParam(
+      certs_container, out, consumedParams, paramName) {
+    if (certs_container.certificates instanceof Array) {
+      var certs =
+          certs_container.certificates.reduce(function(previous, current) {
+            return previous.concat(current.split('\n'));
+          }, new Array());
+      out.writeArrowKey(paramName);
+      out.writeSpaceIndentedLines(8, certs);
+      consumedParams[paramName] = true;
+    }
+  }
+
+  /**
+   * Outputs the certificate parameters of |entry| to |out|.
+   */
+  function writeParamsForCertificates(entry, out, consumedParams) {
+    writeCertificateParam(entry.params, out, consumedParams, 'certificates');
+
+    if (typeof(entry.params.verified_cert) == 'object')
+      writeCertificateParam(
+          entry.params.verified_cert, out, consumedParams, 'verified_cert');
+
+    if (typeof(entry.params.cert_status) == 'number') {
+      var valueStr = entry.params.cert_status + ' (' +
+          getCertStatusFlagSymbolicString(entry.params.cert_status) + ')';
+      out.writeArrowKeyValue('cert_status', valueStr);
+      consumedParams.cert_status = true;
+    }
+  }
+
+  function writeParamsForCheckedCertificates(entry, out, consumedParams) {
+    if (typeof(entry.params.certificate) == 'object')
+      writeCertificateParam(
+          entry.params.certificate, out, consumedParams, 'certificate');
+  }
+
+  /**
+   * Outputs the SSL version fallback parameters of |entry| to |out|.
+   */
+  function writeParamsForSSLVersionFallback(entry, out, consumedParams) {
+    var params = entry.params;
+
+    if (typeof params.version_before != 'number' ||
+        typeof params.version_after != 'number') {
+      // Unrecognized params.
+      return;
+    }
+
+    var line = SSLVersionNumberToName(params.version_before) + ' ==> ' +
+        SSLVersionNumberToName(params.version_after);
+    out.writeArrowIndentedLines([line]);
+
+    consumedParams.version_before = true;
+    consumedParams.version_after = true;
+  }
+
+  function writeParamsForProxyConfigChanged(entry, out, consumedParams) {
+    var params = entry.params;
+
+    if (typeof params.new_config != 'object') {
+      // Unrecognized params.
+      return;
+    }
+
+    if (typeof params.old_config == 'object') {
+      var oldConfigString = proxySettingsToString(params.old_config);
+      // The previous configuration may not be present in the case of
+      // the initial proxy settings fetch.
+      out.writeArrowKey('old_config');
+
+      out.writeSpaceIndentedLines(8, oldConfigString.split('\n'));
+
+      consumedParams.old_config = true;
+    }
+
+    var newConfigString = proxySettingsToString(params.new_config);
+    out.writeArrowKey('new_config');
+    out.writeSpaceIndentedLines(8, newConfigString.split('\n'));
+
+    consumedParams.new_config = true;
+  }
+
+  function getTextForEvent(entry) {
+    var text = '';
+
+    if (entry.isBegin() && canCollapseBeginWithEnd(entry)) {
+      // Don't prefix with '+' if we are going to collapse the END event.
+      text = ' ';
+    } else if (entry.isBegin()) {
+      text = '+' + text;
+    } else if (entry.isEnd()) {
+      text = '-' + text;
+    } else {
+      text = ' ';
+    }
+
+    text += EventTypeNames[entry.orig.type];
+    return text;
+  }
+
+  proxySettingsToString = function(config) {
+    if (!config)
+      return '';
+
+    // TODO(eroman): if |config| has unexpected properties, print it as JSON
+    //               rather than hide them.
+
+    function getProxyListString(proxies) {
+      // Older versions of Chrome would set these values as strings, whereas
+      // newer
+      // logs use arrays.
+      // TODO(eroman): This behavior changed in M27. Support for older logs can
+      //               safely be removed circa M29.
+      if (Array.isArray(proxies)) {
+        var listString = proxies.join(', ');
+        if (proxies.length > 1)
+          return '[' + listString + ']';
+        return listString;
+      }
+      return proxies;
+    }
+
+    // The proxy settings specify up to three major fallback choices
+    // (auto-detect, custom pac url, or manual settings).
+    // We enumerate these to a list so we can later number them.
+    var modes = [];
+
+    // Output any automatic settings.
+    if (config.auto_detect)
+      modes.push(['Auto-detect']);
+    if (config.pac_url)
+      modes.push(['PAC script: ' + config.pac_url]);
+
+    // Output any manual settings.
+    if (config.single_proxy || config.proxy_per_scheme) {
+      var lines = [];
+
+      if (config.single_proxy) {
+        lines.push('Proxy server: ' + getProxyListString(config.single_proxy));
+      } else if (config.proxy_per_scheme) {
+        for (var urlScheme in config.proxy_per_scheme) {
+          if (urlScheme != 'fallback') {
+            lines.push(
+                'Proxy server for ' + urlScheme.toUpperCase() + ': ' +
+                getProxyListString(config.proxy_per_scheme[urlScheme]));
+          }
+        }
+        if (config.proxy_per_scheme.fallback) {
+          lines.push(
+              'Proxy server for everything else: ' +
+              getProxyListString(config.proxy_per_scheme.fallback));
         }
       }
-      if (config.proxy_per_scheme.fallback) {
-        lines.push('Proxy server for everything else: ' +
-                   getProxyListString(config.proxy_per_scheme.fallback));
+
+      // Output any proxy bypass rules.
+      if (config.bypass_list) {
+        if (config.reverse_bypass) {
+          lines.push('Reversed bypass list: ');
+        } else {
+          lines.push('Bypass list: ');
+        }
+
+        for (var i = 0; i < config.bypass_list.length; ++i)
+          lines.push('  ' + config.bypass_list[i]);
       }
-    }
-
-    // Output any proxy bypass rules.
-    if (config.bypass_list) {
-      if (config.reverse_bypass) {
-        lines.push('Reversed bypass list: ');
-      } else {
-        lines.push('Bypass list: ');
-      }
-
-      for (var i = 0; i < config.bypass_list.length; ++i)
-        lines.push('  ' + config.bypass_list[i]);
-    }
-
-    modes.push(lines);
-  }
-
-  var result = [];
-  if (modes.length < 1) {
-    // If we didn't find any proxy settings modes, we are using DIRECT.
-    result.push('Use DIRECT connections.');
-  } else if (modes.length == 1) {
-    // If there was just one mode, don't bother numbering it.
-    result.push(modes[0].join('\n'));
-  } else {
-    // Otherwise concatenate all of the modes into a numbered list
-    // (which correspond with the fallback order).
-    for (var i = 0; i < modes.length; ++i)
-      result.push(indentLines('(' + (i + 1) + ') ', modes[i]));
-  }
-
-  if (config.source != undefined && config.source != 'UNKNOWN')
-    result.push('Source: ' + config.source);
-
-  return result.join('\n');
-};
-
-// End of anonymous namespace.
+
+      modes.push(lines);
+    }
+
+    var result = [];
+    if (modes.length < 1) {
+      // If we didn't find any proxy settings modes, we are using DIRECT.
+      result.push('Use DIRECT connections.');
+    } else if (modes.length == 1) {
+      // If there was just one mode, don't bother numbering it.
+      result.push(modes[0].join('\n'));
+    } else {
+      // Otherwise concatenate all of the modes into a numbered list
+      // (which correspond with the fallback order).
+      for (var i = 0; i < modes.length; ++i)
+        result.push(indentLines('(' + (i + 1) + ') ', modes[i]));
+    }
+
+    if (config.source != undefined && config.source != 'UNKNOWN')
+      result.push('Source: ' + config.source);
+
+    return result.join('\n');
+  };
+
+  // End of anonymous namespace.
 })();