GpuStats: track CPU Vulkan implementation usage

Bug: 131927737
Test: test on both GPU and CPU Vulkan implementations
Change-Id: I36de47e14cd132a779d9f39fdc19325d4772bb9a
diff --git a/services/gpuservice/GpuService.h b/services/gpuservice/GpuService.h
index 3e02b4a..8226901 100644
--- a/services/gpuservice/GpuService.h
+++ b/services/gpuservice/GpuService.h
@@ -50,6 +50,8 @@
                      int64_t driverLoadingTime) override;
     status_t getGpuStatsGlobalInfo(std::vector<GpuStatsGlobalInfo>* outStats) const override;
     status_t getGpuStatsAppInfo(std::vector<GpuStatsAppInfo>* outStats) const override;
+    void setCpuVulkanInUse(const std::string& appPackageName,
+                           const uint64_t driverVersionCode) override;
 
     /*
      * IBinder interface