Move statsd (and tests) to libbinder_ndk

Major changes include:
    - Removing unused permission checks within StatsService. These
      include ENFORCE_DUMP_AND_USAGE_STATS, checkDumpAndUsageStats,
      kOpUsage, and kPermissionUsage.
    - Converting from sp to shared_ptr
    - Using libbinder_ndk functions instead of libbinder functions
      (e.g. for installing death recipients, getting calling uids, etc.)
        - New death recipients were added in StatsService,
          ConfigManager, and SubscriberReporter.
    - Using a unique token (timestamp) to identify shell subscribers
      instead of IResultReceiver because IResultReceiver is not exposed by
      libbinder_ndk. Currently, statsd cannot detect if perfd dies; we
      will fix that later.

Bug: 145232107
Bug: 148609603
Test: m statsd
Test: m statsd_test
Test: bit stastd_test:*
Test: atest GtsStatsdHostTestCases
Change-Id: Ia1fda7280c22320bc4ebc8371acaadbe8eabcbd2
diff --git a/cmds/statsd/src/statscompanion_util.cpp b/cmds/statsd/src/statscompanion_util.cpp
index d338827..ce07ec0 100644
--- a/cmds/statsd/src/statscompanion_util.cpp
+++ b/cmds/statsd/src/statscompanion_util.cpp
@@ -18,26 +18,16 @@
 #include "Log.h"
 
 #include "statscompanion_util.h"
+#include <android/binder_auto_utils.h>
+#include <android/binder_manager.h>
 
 namespace android {
 namespace os {
 namespace statsd {
 
-sp <IStatsCompanionService> getStatsCompanionService() {
-    sp<IStatsCompanionService> statsCompanion = nullptr;
-    // Get statscompanion service from service manager
-    static const sp <IServiceManager> sm(defaultServiceManager());
-    if (statsCompanion == nullptr) {
-        if (sm != nullptr) {
-            const String16 name("statscompanion");
-            statsCompanion = interface_cast<IStatsCompanionService>(sm->checkService(name));
-            if (statsCompanion == nullptr) {
-                ALOGW("statscompanion service unavailable!");
-                return nullptr;
-            }
-        }
-    }
-    return statsCompanion;
+shared_ptr<IStatsCompanionService> getStatsCompanionService() {
+    ::ndk::SpAIBinder binder(AServiceManager_getService("statscompanion"));
+    return IStatsCompanionService::fromBinder(binder);
 }
 
 }  // namespace statsd