Remove dependency on language detection library.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index 3f759042a41a8251de84d105f1f7c3a9d7ec239e..c3f29b5b1e811edff597368954fea347ac6dc9f0 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -46,7 +46,6 @@
 #include "chrome/browser/google/google_search_counter.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/jankometer.h"
-#include "chrome/browser/language_usage_metrics.h"
 #include "chrome/browser/managed_mode/managed_mode.h"
 #include "chrome/browser/metrics/field_trial_synchronizer.h"
 #include "chrome/browser/metrics/metrics_log.h"
@@ -170,6 +169,10 @@
 #include "policy/policy_constants.h"
 #endif
 
+#if defined(ENABLE_LANGUAGE_DETECTION)
+#include "chrome/browser/language_usage_metrics.h"
+#endif
+
 #if defined(ENABLE_RLZ)
 #include "chrome/browser/rlz/rlz.h"
 #endif
@@ -1334,10 +1337,12 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   HandleTestParameters(parsed_command_line());
   RecordBreakpadStatusUMA(browser_process_->metrics_service());
   about_flags::RecordUMAStatistics(local_state_);
+#if defined(ENABLE_LANGUAGE_DETECTION)
   LanguageUsageMetrics::RecordAcceptLanguages(
       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
   LanguageUsageMetrics::RecordApplicationLanguage(
       browser_process_->GetApplicationLocale());
+#endif
 
   // The extension service may be available at this point. If the command line
   // specifies --uninstall-extension, attempt the uninstall extension startup