GpuStats: migrate to new statsd native puller api (part 2)

This change migrates the global atom puller over to the new api.

Bug: 148421389
Test: atest gpuservice_unittest
Test: statsd_testdrive 10054
Change-Id: If57199b266a3f4436a53712f8deec9ad75bfda41
diff --git a/services/gpuservice/tests/unittests/TestableGpuStats.h b/services/gpuservice/tests/unittests/TestableGpuStats.h
new file mode 100644
index 0000000..4ea564c
--- /dev/null
+++ b/services/gpuservice/tests/unittests/TestableGpuStats.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gpustats/GpuStats.h>
+#include <stdint.h>
+
+namespace android {
+
+class TestableGpuStats {
+public:
+    explicit TestableGpuStats(GpuStats *gpuStats) : mGpuStats(gpuStats) {}
+
+    AStatsManager_PullAtomCallbackReturn makePullAtomCallback(int32_t atomTag) {
+        return mGpuStats->pullAtomCallback(atomTag, nullptr, mGpuStats);
+    }
+
+private:
+    GpuStats *mGpuStats;
+};
+
+} // namespace android