Add a switch to emit browser histograms.

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 502 matching lines @@
 const char kDiskCacheDir[]                  = "disk-cache-dir";
 
 // Forces the maximum disk space to be used by the disk cache, in bytes.
 const char kDiskCacheSize[]                 = "disk-cache-size";
 
 const char kDnsLogDetails[]                 = "dns-log-details";
 
 // Disables prefetching of DNS information.
 const char kDnsPrefetchDisable[]            = "dns-prefetch-disable";
 
+// Requests that a running browser process dump its collected histograms to a
+// given file.
+const char kDumpBrowserHistograms[]         = "dump-browser-histograms";
+
 // If set, Flash fullscreen widgets are embedded within the browser window and
 // with the same UX as HTML5 fullscreen.
 //
 // TODO(miu): This feature is a work in-progress.  It should not be enabled by
 // default until going through a formal UX review, and all comments/concerns on
 // the crbug are addressed.  http://crbug.com/290403
 const char kEmbedFlashFullscreen[] = "embed-flash-fullscreen";
 
 // Enables the <adview> tag in packaged apps.
 const char kEnableAdview[]                  = "enable-adview";
@@ skipping 1100 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