bloaty: measure stripped Rust binaries

Modify bloaty's MeasureSizeForPath to allow a module to provide multiple
paths. This is used to measure both unstripped and stripped
libraries/binaries. Add unit test to ensure correct measurements are
generated for Rust.

Test: m out/soong/binary_sizes.pb.gz
Change-Id: I59439b77dbf1cf5ad71e1c02996a6a90938536b4

rust/builder.go

@@ -21,7 +21,6 @@ import (
 	"github.com/google/blueprint"
 
 	"android/soong/android"
-	"android/soong/bloaty"
 	"android/soong/rust/config"
 )
 
@@ -254,8 +253,6 @@ func transformSrctoCrate(ctx ModuleContext, main android.Path, deps PathDeps, fl
 		implicits = append(implicits, clippyFile)
 	}
 
-	bloaty.MeasureSizeForPath(ctx, outputFile)
-
 	ctx.Build(pctx, android.BuildParams{
 		Rule:            rustc,
 		Description:     "rustc " + main.Rel(),