Reland of Android: support multiple displays on C++ side

blimp/test/run_all_unittests.cc

Index: blimp/test/run_all_unittests.cc
diff --git a/blimp/test/run_all_unittests.cc b/blimp/test/run_all_unittests.cc
index 3364010a9c90c0ecbad64b959c024a85df30ddf4..d19ed43c923d9d82bde87492d841db3eab2b264a 100644
--- a/blimp/test/run_all_unittests.cc
+++ b/blimp/test/run_all_unittests.cc
@@ -14,6 +14,7 @@
 #include "blimp/client/public/android/blimp_jni_registrar.h"
 #include "net/android/net_jni_registrar.h"
 #include "ui/android/ui_android_jni_registrar.h"
+#include "ui/display/android/jni_registrar.h"
 #include "ui/gfx/android/gfx_jni_registrar.h"
 #endif
 
@@ -41,6 +42,10 @@ class BlimpTestSuite : public base::TestSuite {
       return false;
     }
 
+    if (!display::RegisterJni(env)) {
+      return false;
+    }
+
     if (!net::android::RegisterJni(env)) {
       return false;
     }