Enable loading native libraries with RTLD_DEEPBIND

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 12d6d7c7a35114408ccccfb95e045848624de796..db691aca30ee474579af42e68a188da4e9efcca2 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -555,6 +555,7 @@ component("base") {
     "metrics/user_metrics.cc",
     "metrics/user_metrics.h",
     "metrics/user_metrics_action.h",
+    "native_library.cc",
     "native_library.h",
     "native_library_ios.mm",
     "native_library_mac.mm",
@@ -1135,6 +1136,7 @@ component("base") {
       "memory/discardable_shared_memory.cc",
       "memory/discardable_shared_memory.h",
       "memory/shared_memory_posix.cc",
+      "native_library.cc",
       "native_library_posix.cc",
       "path_service.cc",
       "process/kill.cc",
@@ -2027,6 +2029,10 @@ test("base_unittests") {
     "//third_party/icu",
   ]
 
+  data_deps = [
+    ":native_library_test_library",
+  ]
+
   if (is_ios || is_mac) {
     deps += [ ":base_unittests_arc" ]
   }
@@ -2153,6 +2159,12 @@ test("base_unittests") {
   }
 }
 
+shared_library("native_library_test_library") {
+  sources = [
+    "native_library_test_library.cc",
+  ]
+}
+
 action("build_date") {
   script = "//build/write_build_date_header.py"