Add a commandline flag to chrome to validate crx files

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 55c12558650ee0e750c3038dc1a8f26778fc73a9..879b2356eabdb7532cc8c56d34202f047aadf315 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1386,6 +1386,9 @@ const char kUserDataDir[]                   = "user-data-dir";
 // Uses the ClientLogin signin flow instead of the web-based signin flow.
 const char kUseClientLoginSigninFlow[]      = "use-client-login-signin-flow";
 
+// Examines a .crx for validity and prints the result.
+const char kValidateCrx[]                   = "validate-crx";
+
 // Uses experimental simple cache backend if possible.
 const char kUseSimpleCacheBackend[]         = "use-simple-cache-backend";