Fixing loglevel in chrome driver to accept string rather than an integer.

chrome/test/webdriver/webdriver_logging.h

Index: chrome/test/webdriver/webdriver_logging.h
diff --git a/chrome/test/webdriver/webdriver_logging.h b/chrome/test/webdriver/webdriver_logging.h
index 95fe86b8de4a18e3d6f108d9680f3a647dcf1350..5f6d18cf69c96c29119262294fb28e5095ec1b2d 100644
--- a/chrome/test/webdriver/webdriver_logging.h
+++ b/chrome/test/webdriver/webdriver_logging.h
@@ -22,6 +22,7 @@ namespace webdriver {
 
 // WebDriver logging levels.
 enum LogLevel {
+  kOffLogLevel = 1200,
   kSevereLogLevel = 1000,
   kWarningLogLevel = 900,
   kInfoLogLevel = 800,
@@ -30,6 +31,9 @@ enum LogLevel {
   kAllLogLevel = -1000
 };
 
+// |name| should be a webdriver log level, such as "INFO", "SEVERE", etc.
+LogLevel LogLevelFromString(const std::string& name);
+
 // Represents a type/source of a WebDriver log.
 class LogType {
  public: