Move signal_blocker to platform and use it by default in TEMP_FAILURE_RETRY.

runtime/bin/file_system_watcher_linux.cc

Index: runtime/bin/file_system_watcher_linux.cc
diff --git a/runtime/bin/file_system_watcher_linux.cc b/runtime/bin/file_system_watcher_linux.cc
index 2a5fee547c062276d7d36b5415d2b7c24a72a0f7..9261426fa9e8045f08b3a241eb6211f14c8d5269 100644
--- a/runtime/bin/file_system_watcher_linux.cc
+++ b/runtime/bin/file_system_watcher_linux.cc
@@ -13,6 +13,8 @@
 #include "bin/fdutils.h"
 #include "bin/socket.h"
 
+#include "platform/signal_blocker.h"
+
 
 namespace dart {
 namespace bin {
@@ -23,7 +25,7 @@ bool FileSystemWatcher::IsSupported() {
 
 
 intptr_t FileSystemWatcher::Init() {
-  int id = TEMP_FAILURE_RETRY(inotify_init1(IN_CLOEXEC));
+  int id = NO_RETRY_EXPECTED(inotify_init1(IN_CLOEXEC));
   if (id < 0) return -1;
   // Some systems dosn't support setting this as non-blocking. Since watching
   // internals are kept away from the user, we know it's possible to continue,
@@ -47,7 +49,7 @@ intptr_t FileSystemWatcher::WatchPath(intptr_t id,
   if (events & kModifyContent) list_events |= IN_CLOSE_WRITE | IN_ATTRIB;
   if (events & kDelete) list_events |= IN_DELETE;
   if (events & kMove) list_events |= IN_MOVE;
-  int path_id = TEMP_FAILURE_RETRY(inotify_add_watch(id, path, list_events));
+  int path_id = NO_RETRY_EXPECTED(inotify_add_watch(id, path, list_events));
   if (path_id < 0) {
     return -1;
   }
@@ -56,7 +58,7 @@ intptr_t FileSystemWatcher::WatchPath(intptr_t id,
 
 
 void FileSystemWatcher::UnwatchPath(intptr_t id, intptr_t path_id) {
-  VOID_TEMP_FAILURE_RETRY(inotify_rm_watch(id, path_id));
+  VOID_NO_RETRY_EXPECTED(inotify_rm_watch(id, path_id));
 }