Remove the unmaintained performance monitor.

chrome/common/chrome_switches.cc

 // 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 867 matching lines @@
 
 // Packages an extension to a .crx installable file from a given directory.
 const char kPackExtension[]                 = "pack-extension";
 
 // Optional PEM private key to use in signing packaged .crx.
 const char kPackExtensionKey[]              = "pack-extension-key";
 
 // Specifies the path to the user data folder for the parent profile.
 const char kParentProfile[]                 = "parent-profile";
 
-// Launches PerformanceMonitor at startup, which will gather statistics about
-// Chrome's CPU and memory usage, page load times, startup times, and network
-// usage, and will also store information about events which may be of interest,
-// such as extension-related occurrences and crashes. Optionally, this may be
-// run with an integer value representing the interval between the timed
-// metric gatherings, measured in seconds (if invalid or not provided, the
-// default interval is used).
-const char kPerformanceMonitorGathering[]   = "performance-monitor-gathering";
-
 // Development flag for permission request API. This flag is needed until
 // the API is finalized.
 // TODO(bauerb): Remove when this flag is not needed anymore.
 const char kPermissionRequestApiScope[]     = "permission-request-api-scope";
 
 // Development flag for permission request API. This flag is needed until
 // the API is finalized.
 // TODO(bauerb): Remove when this flag is not needed anymore.
 const char kPermissionRequestApiUrl[]       = "permission-request-api-url";
 
@@ skipping 444 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches