Check library version and handle library load errors

content/app/android/library_loader_hooks.cc

Index: content/app/android/library_loader_hooks.cc
diff --git a/content/app/android/library_loader_hooks.cc b/content/app/android/library_loader_hooks.cc
index 7ae89e6a308f3fdba4fd7a3f9062c8b8bb8518f6..b412c3abfee18f616556db3d8399421164a4731c 100644
--- a/content/app/android/library_loader_hooks.cc
+++ b/content/app/android/library_loader_hooks.cc
@@ -36,6 +36,7 @@ namespace content {
 
 namespace {
 base::AtExitManager* g_at_exit_manager = NULL;
+const char* g_library_version_number = "";
 }
 
 bool EnsureJniRegistered(JNIEnv* env) {
@@ -146,4 +147,12 @@ bool RegisterLibraryLoaderEntryHook(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
+void SetVersionNumber(const char* version_number) {
+  g_library_version_number = strdup(version_number);
+}
+
+jstring GetVersionNumber(JNIEnv* env, jclass clazz) {
+  return env->NewStringUTF(g_library_version_number);
+}
+
 }  // namespace content