Move language detection to a component

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 96fc4df376b0efa4a6512f09aac81fe190e1a6c3..fec7bc68ee84057a971f05f1c5168f188016ba8e 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -109,6 +109,7 @@
 #include "chrome/common/url_constants.h"
 #include "chromeos/chromeos_constants.h"
 #include "components/nacl/common/nacl_process_type.h"
+#include "components/translate/common/translate_switches.h"
 #include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/browser_child_process_host.h"
 #include "content/public/browser/browser_main_parts.h"
@@ -1452,8 +1453,8 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
       switches::kRecordMode,
       switches::kSilentDumpOnDCHECK,
       switches::kSpdyProxyAuthOrigin,
-      switches::kTranslateSecurityOrigin,
       switches::kWhitelistedExtensionID,
+      translate::kTranslateSecurityOrigin,

[blundell, 2013/10/02 10:01:17]

Hmm, now that I look at this, I think that this should follow the existing
pattern (see autofill::switches:: and extensions::switches:: above), and I can
send an email to chromium-dev to see which pattern people like better and then
change the pattern for all of them at once if that's the way we decide.

[droger, 2013/10/02 10:59:41]

Done.

     };
 
     command_line->CopySwitchesFrom(browser_command_line, kSwitchNames,