metrics: fix compilation for GOOS=js

metrics/cpu_disabled.go

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-// +build ios
+// +build ios js
 
 package metrics
 

metrics/cpu_enabled.go

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-// +build !ios
+// +build !ios,!js
 
 package metrics
 

metrics/cpu_windows.go → metrics/cputime_nop.go

@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+// +build windows js
+
 package metrics
 
 // getProcessCPUTime returns 0 on Windows as there is no system call to resolve

metrics/cpu_syscall.go → metrics/cputime_unix.go

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-// +build !windows
+// +build !windows,!js
 
 package metrics
 

metrics/runtime_cgo.go

@@ -1,5 +1,4 @@
-// +build cgo
-// +build !appengine
+// +build cgo,!appengine,!js
 
 package metrics
 

metrics/runtime_no_cgo.go

@@ -1,4 +1,4 @@
-// +build !cgo appengine
+// +build !cgo appengine js
 
 package metrics