Adding privacy tags to graphicsstats proto.

Creating a copy of the graphicsstats proto so that one can be tagged
with privacy annotations and the other can be used internally while
still using the protobuf-cpp-lite library.

This is the same change as the pi-dev one (http://ag/3841646), but due
to changes in master, that change has a merge conflict, so I have to
create a separate CL for master.

Bug: 72570104
Test: it builds
Change-Id: I2d72e7bd17689c1401a16d5a13956e6528ddb525
diff --git a/libs/hwui/Android.bp b/libs/hwui/Android.bp
index de4eaf5..3b0abc3 100644
--- a/libs/hwui/Android.bp
+++ b/libs/hwui/Android.bp
@@ -69,7 +69,6 @@
         "libRScpp",
     ],
     static_libs: [
-        "libplatformprotos",
         "libEGL_blobCache",
     ],
 }
@@ -269,8 +268,13 @@
         "TextureCache.cpp",
         "VectorDrawable.cpp",
         "VkLayer.cpp",
+        "protos/graphicsstats.proto",
     ],
 
+    proto: {
+        export_proto_headers: true,
+    },
+
     export_include_dirs: ["."],
     export_shared_lib_headers: ["libRScpp"],
 }