Let DCHECK in non-official-release build be opt-in with dcheck_always_on=1 only

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 1297 matching lines @@
 const char kShowIcons[]                     = "show-icons";
 
 // Marks a renderer as the signin process.
 const char kSigninProcess[]                 = "signin-process";
 
 // Does not show an infobar when an extension attaches to a page using
 // chrome.debugger page. Required to attach to extension background pages.
 const char kSilentDebuggerExtensionAPI[]    = "silent-debugger-extension-api";
 
 // Changes the DCHECKS to dump memory and continue instead of displaying error
-// dialog. This is valid only in Release mode when --enable-dcheck is
-// specified.
+// dialog. This is valid only in Release mode when gyp dcheck_always_on=1.
 const char kSilentDumpOnDCHECK[]            = "silent-dump-on-dcheck";
 
 // Causes Chrome to launch without opening any windows by default. Useful if
 // one wishes to use Chrome as an ash server.
 const char kSilentLaunch[]                  = "silent-launch";
 
 // Simulates an update being available.
 const char kSimulateUpgrade[]               = "simulate-upgrade";
 
 // Simulates a critical update being available.
@@ skipping 313 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