Add PathForGoBinary

Add PathForGoBinary that uses pathForInstall to return the install
path of a GoBinaryTool.  This will replace various places that used
PathForOutput to reconstruct a path to a Go tool, and will support
moving Go tools to the Make install directory outside of the
PathForOutput directory in a future patch.

Bug: 204136549
Test: m checkbuild
Change-Id: I83a3be9f5c621975540f5ed601a0b9e2611c98b9
diff --git a/apex/apex.go b/apex/apex.go
index 1f06187..a36a022 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1454,12 +1454,7 @@
 
 func apexFileForGoBinary(ctx android.BaseModuleContext, depName string, gb bootstrap.GoBinaryTool) apexFile {
 	dirInApex := "bin"
-	s, err := filepath.Rel(android.PathForOutput(ctx).String(), gb.InstallPath())
-	if err != nil {
-		ctx.ModuleErrorf("Unable to use compiled binary at %s", gb.InstallPath())
-		return apexFile{}
-	}
-	fileToCopy := android.PathForOutput(ctx, s)
+	fileToCopy := android.PathForGoBinary(ctx, gb)
 	// NB: Since go binaries are static we don't need the module for anything here, which is
 	// good since the go tool is a blueprint.Module not an android.Module like we would
 	// normally use.