Record language usage as UMA histograms.

chrome/browser/browser_main.cc

Index: chrome/browser/browser_main.cc
diff --git a/chrome/browser/browser_main.cc b/chrome/browser/browser_main.cc
index e5711ccd96482516edeb4cd185e791e35f05c7c6..a07f7c2f544756d50562cc2a77e4c34d6f6262aa 100644
--- a/chrome/browser/browser_main.cc
+++ b/chrome/browser/browser_main.cc
@@ -45,6 +45,7 @@
 #include "chrome/browser/first_run/first_run_browser_process.h"
 #include "chrome/browser/first_run/upgrade_util.h"
 #include "chrome/browser/jankometer.h"
+#include "chrome/browser/language_usage_metrics.h"
 #include "chrome/browser/metrics/field_trial_synchronizer.h"
 #include "chrome/browser/metrics/histogram_synchronizer.h"
 #include "chrome/browser/metrics/metrics_log.h"
@@ -1873,6 +1874,10 @@ int BrowserMain(const MainFunctionParams& parameters) {
   HandleTestParameters(parsed_command_line);
   RecordBreakpadStatusUMA(metrics);
   about_flags::RecordUMAStatistics(local_state);
+  LanguageUsageMetrics::RecordAcceptLanguages(

[Yusuke Sato, 2011/07/13 06:52:06]

Question: Is it okay to use the metrics on all platforms? If not, please move
this inside the '#if defined(OS_CHROMEOS)' block below.

[Yuzo, 2011/07/13 11:30:20]

I think it is OK because:
- these metrics is meaningful also for other platforms.
- this is run only once at start up.

On 2011/07/13 06:52:06, Yusuke Sato wrote:

+      profile->GetPrefs()->GetString(prefs::kAcceptLanguages));
+  LanguageUsageMetrics::RecordApplicationLanguage(
+      g_browser_process->GetApplicationLocale());
 
 #if defined(OS_CHROMEOS)
   metrics->StartExternalMetrics();