Android WebView: initialize url_util safely.

android_webview/lib/main/webview_entry_point.cc

Index: android_webview/lib/main/webview_entry_point.cc
diff --git a/android_webview/lib/main/webview_entry_point.cc b/android_webview/lib/main/webview_entry_point.cc
index 858601f3ba0335fe7f32870ddb5df7b947a6b63a..7038416fc9b12b2c4b0cffff7ace9c5c7c261aed 100644
--- a/android_webview/lib/main/webview_entry_point.cc
+++ b/android_webview/lib/main/webview_entry_point.cc
@@ -10,6 +10,7 @@
 #include "components/web_contents_delegate_android/component_jni_registrar.h"
 #include "content/public/app/android_library_loader_hooks.h"
 #include "content/public/app/content_main.h"
+#include "url/url_util.h"
 
 static base::android::RegistrationMethod
     kWebViewDependencyRegisteredMethods[] = {
@@ -44,5 +45,10 @@ JNI_EXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
 
   content::SetContentMainDelegate(new android_webview::AwMainDelegate());
 
+  // Initialize url_util here while we are still single-threaded, in case we use
+  // CookieManager before initializing Chromium (which would normally have done
+  // this). It's safe to call this multiple times.
+  url_util::Initialize();
+
   return JNI_VERSION_1_4;
 }