Add a switch to prevent logging redirection on chromeos.

chrome/common/logging_chrome.cc

Index: chrome/common/logging_chrome.cc
diff --git a/chrome/common/logging_chrome.cc b/chrome/common/logging_chrome.cc
index 4e2df8c8efdf47d8b3ab16953696495eaf4d7c70..d88677508f5de04f57502c31b8e31453c91872ae 100644
--- a/chrome/common/logging_chrome.cc
+++ b/chrome/common/logging_chrome.cc
@@ -229,6 +229,9 @@ base::FilePath GetSessionLogFile(const base::CommandLine& command_line) {
 }
 
 void RedirectChromeLogging(const base::CommandLine& command_line) {

[sky, 2017/05/23 17:35:31]

AFAICT this function is only used in chromeos. Code that lives in chrome/common
is meant to be used both in the browser and renderer. This code seems to only be
used in the browser. Can this function be moved to chromeos specific code?

[achuithb, 2017/05/25 19:36:41]

Done.

+  if (command_line.HasSwitch(switches::kDisableLoggingRedirect))
+    return;
+
   if (chrome_logging_redirected_) {
     // TODO(nkostylev): Support multiple active users. http://crbug.com/230345
     LOG(WARNING) << "NOT redirecting logging for multi-profiles case.";