Implemented VLOG() et al.

base/base_switches.cc

 // Copyright (c) 2010 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 chrome/common/debug_on_start.h, the process will
 // start the JIT system-registered debugger on itself and will wait for 60
@@ skipping 13 matching lines @@
 const char kNoErrorDialogs[]                = "noerrdialogs";
 
 // Disable win_util::MessageBox.  This is useful when running as part of
 // scripts that do not have a user interface.
 const char kNoMessageBox[]                  = "no-message-box";
 
 // 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";
 
+// Gives the default maximal active V-logging level; 0 is the default.
+// Normally positive values are used for V-logging levels.
+const char kV[]                             = "v";
+
+// Gives the per-module maximal V-logging levels to override the value
+// given by --v.  E.g. "my_module=2,foo*=3" would change the logging
+// level for all code in source files "my_module.*" and "foo*.*"
+// ("-inl" suffixes are also disregarded for this matching).
+const char kVModule[]                       = "vmodule";
+
 // Will wait for 60 seconds for a debugger to come to attach to the process.
 const char kWaitForDebugger[]               = "wait-for-debugger";
 
 }  // namespace switches