Reland of Deduplicate Monochrome locale .paks

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 342c8876687aeebf399434664b7b51b41043ab0d..221f0300c369354edb88c0f208ae882bfb34def8 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -2815,6 +2815,12 @@ void ChromeContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
   fd = ui::GetLocalePackFd(&region);
   mappings->ShareWithRegion(kAndroidLocalePakDescriptor, fd, region);
 
+  // Optional secondary locale .pak file.
+  fd = ui::GetSecondaryLocalePackFd(&region);
+  if (fd != -1) {
+    mappings->ShareWithRegion(kAndroidSecondaryLocalePakDescriptor, fd, region);
+  }
+
   breakpad::CrashDumpObserver::GetInstance()->BrowserChildProcessStarted(
       child_process_id, mappings);