Game Driver: add GpuStats class to process and dump stats

Bug: 123529932
Test: adb shell dumpsys gpu
Change-Id: I2d524b1eecb00be71d344c07e8e18244a44bbcb8
diff --git a/services/gpuservice/Android.bp b/services/gpuservice/Android.bp
index 2e8571a..dbb6ba6 100644
--- a/services/gpuservice/Android.bp
+++ b/services/gpuservice/Android.bp
@@ -2,6 +2,7 @@
     name: "gpuservice_sources",
     srcs: [
         "GpuService.cpp",
+        "gpustats/GpuStats.cpp"
     ],
 }