Make KillAllAdb robust to AccessDenied exceptions.

This error seems to pop up when adb is not currently running. It isn't clear to
me why we get that instead of NoSuchProcess, but in any case, this should allow
us to continue instead of aborting like in:
http://chromegw/i/chromium.perf/builders/Android%20Nexus5%20Perf/builds/1022/steps/device_status_check/logs/stdio

BUG=388885

Review URL: https://codereview.chromium.org/385733002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282525 0039d316-1c4b-4281-b951-d872f2087c98

build/android/buildbot/bb_device_status_check.py

@@ -246,7 +246,7 @@ def KillAllAdb():
       try:
         if 'adb' in p.name:
           yield p
-      except psutil.error.NoSuchProcess:
+      except (psutil.error.NoSuchProcess, psutil.error.AccessDenied):
         pass
 
   for sig in [signal.SIGTERM, signal.SIGQUIT, signal.SIGKILL]:
@@ -255,12 +255,12 @@ def KillAllAdb():
         print 'kill %d %d (%s [%s])' % (sig, p.pid, p.name,
             ' '.join(p.cmdline))
         p.send_signal(sig)
-      except psutil.error.NoSuchProcess:
+      except (psutil.error.NoSuchProcess, psutil.error.AccessDenied):
         pass
   for p in GetAllAdb():
     try:
       print 'Unable to kill %d (%s [%s])' % (p.pid, p.name, ' '.join(p.cmdline))
-    except psutil.error.NoSuchProcess:
+    except (psutil.error.NoSuchProcess, psutil.error.AccessDenied):
       pass