linux: Explicitly call FcInit() in ToolkitInitialized().

chrome/browser/chrome_browser_main_linux.cc

Index: chrome/browser/chrome_browser_main_linux.cc
diff --git a/chrome/browser/chrome_browser_main_linux.cc b/chrome/browser/chrome_browser_main_linux.cc
index b7967f86914bf14b20cc1d70e23606f69cb51925..942daad064c9819aee8307d47be5b94328e18cbf 100644
--- a/chrome/browser/chrome_browser_main_linux.cc
+++ b/chrome/browser/chrome_browser_main_linux.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/chrome_browser_main_linux.h"
 
+#include <fontconfig/fontconfig.h>
+
 #include "chrome/browser/browser_process.h"
 #include "components/breakpad/app/breakpad_linux.h"
 #include "components/metrics/metrics_service.h"
@@ -22,6 +24,15 @@ ChromeBrowserMainPartsLinux::ChromeBrowserMainPartsLinux(
 ChromeBrowserMainPartsLinux::~ChromeBrowserMainPartsLinux() {
 }
 
+void ChromeBrowserMainPartsLinux::ToolkitInitialized() {
+  // Explicitly initialize Fontconfig early on to prevent races later due to
+  // implicit initialization in response to threads' first calls to Fontconfig:
+  // http://crbug.com/404311
+  FcInit();
+
+  ChromeBrowserMainPartsPosix::ToolkitInitialized();
+}
+
 void ChromeBrowserMainPartsLinux::PreProfileInit() {
 #if !defined(OS_CHROMEOS)
   // Needs to be called after we have chrome::DIR_USER_DATA and