Game Driver Metrics: plumb gpu global stats into statsd

This change adds all the necessary binder calls to IGpuService.

Bug: 123529932
Test: adb shell cmd stats pull-source 10054
Change-Id: Ibd5b6d366bece45291e80c63f4270c93b56d963f
diff --git a/services/gpuservice/GpuService.cpp b/services/gpuservice/GpuService.cpp
index d7696f9..bf85e88 100644
--- a/services/gpuservice/GpuService.cpp
+++ b/services/gpuservice/GpuService.cpp
@@ -57,6 +57,14 @@
                       appPackageName, driver, isDriverLoaded, driverLoadingTime);
 }
 
+status_t GpuService::getGpuStatsGlobalInfo(std::vector<GpuStatsGlobalInfo>* outStats) const {
+    ATRACE_CALL();
+
+    mGpuStats->pullGlobalStats(outStats);
+
+    return OK;
+}
+
 status_t GpuService::shellCommand(int /*in*/, int out, int err, std::vector<String16>& args) {
     ATRACE_CALL();