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

base/base_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 "base/base_switches.h"
 
 namespace switches {
 
 // If the program includes base/debug/debug_on_start_win.h, the process will
 // (on Windows only) start the JIT system-registered debugger on itself and
 // will wait for 60 seconds for the debugger to attach to itself. Then a break
 // point will be hit.
 const char kDebugOnStart[]                  = "debug-on-start";
 
 // Disables the crash reporting.
 const char kDisableBreakpad[]               = "disable-breakpad";
 
 // Indicates that crash reporting should be enabled. On platforms where helper
 // processes cannot access to files needed to make this decision, this flag is
 // generated internally.
 const char kEnableCrashReporter[]           = "enable-crash-reporter";
 
-// Enable DCHECKs in release mode.
-const char kEnableDCHECK[]                  = "enable-dcheck";
-
 // Generates full memory crash dump.
 const char kFullMemoryCrashReport[]         = "full-memory-crash-report";
 
 // Suppresses all error dialogs when present.
 const char kNoErrorDialogs[]                = "noerrdialogs";
 
 // When running certain tests that spawn child processes, this switch indicates
 // to the test framework that the current process is a child process.
 const char kTestChildProcess[]              = "test-child-process";
 
@@ skipping 35 matching lines @@
 
 #if defined(OS_ANDROID)
 // Overrides low-end device detection, disabling low-end device optimizations.
 const char kDisableLowEndDeviceMode[]       = "disable-low-end-device-mode";
 
 // Overrides low-end device detection, enabling low-end device optimizations.
 const char kEnableLowEndDeviceMode[]        = "enable-low-end-device-mode";
 #endif
 
 }  // namespace switches