update_engine: Clean up angle brackets in template types.

C++11 no longer has the angle bracket pitfall in template types.

BUG=None
TEST=`FEATURES=test emerge-$BOARD update_engine`

Change-Id: I0168b9f208ad8e62ae614b8a3b8bcf31c58fa9f2
Reviewed-on: https://chromium-review.googlesource.com/219203
Commit-Queue: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
diff --git a/subprocess.cc b/subprocess.cc
index e2ab793..76be10c 100644
--- a/subprocess.cc
+++ b/subprocess.cc
@@ -249,7 +249,7 @@
 }
 
 bool Subprocess::SubprocessInFlight() {
-  for (std::map<int, shared_ptr<SubprocessRecord> >::iterator it =
+  for (std::map<int, shared_ptr<SubprocessRecord>>::iterator it =
            subprocess_records_.begin();
        it != subprocess_records_.end(); ++it) {
     if (it->second->callback)