Add android download controller.

content/browser/android/content_jni_registrar.cc

Index: content/browser/android/content_jni_registrar.cc
diff --git a/content/browser/android/content_jni_registrar.cc b/content/browser/android/content_jni_registrar.cc
index c32cc505fc0c4b2647f88ad158a75a616e8b24de..aa5064b458328dd21df0e5758b8e23aa2dd45b6f 100644
--- a/content/browser/android/content_jni_registrar.cc
+++ b/content/browser/android/content_jni_registrar.cc
@@ -7,6 +7,7 @@
 #include "base/android/jni_android.h"
 #include "base/android/jni_registrar.h"
 #include "content/browser/android/command_line.h"
+#include "content/browser/android/download_controller.h"
 #include "content/browser/android/trace_event_binding.h"
 
 namespace content {
@@ -14,6 +15,7 @@ namespace android {
 
 base::android::RegistrationMethod kContentRegisteredMethods[] = {
   { "CommandLine", RegisterCommandLine },
+  { "DownloadController", DownloadController::RegisterDownloadController },
   { "TraceEvent", RegisterTraceEvent },
 };