crash-reporter: log notification for chrome crashes

The standard crash collector logs a warning message every time it receives
a crash which makes reviewing system logs nice.  The chrome collector does
not do this which makes it a bit harder to track what the system is doing.
Add such a message to the chrome collector too.

BUG=chromium:415220
TEST=`cbuildbot amd64-generic-full` passes

Change-Id: I2b4c9990d99b780ed06d72be40b6ce5b95c1ee51
Reviewed-on: https://chromium-review.googlesource.com/218593
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
diff --git a/crash_reporter/chrome_collector.cc b/crash_reporter/chrome_collector.cc
index b7fa7ca..7138407 100644
--- a/crash_reporter/chrome_collector.cc
+++ b/crash_reporter/chrome_collector.cc
@@ -142,6 +142,9 @@
   if (!is_feedback_allowed_function_())
     return true;
 
+  LOG(WARNING) << "Received crash notification for " << exe_name << "["
+               << pid_string << "] user " << uid_string << " (called directly)";
+
   if (exe_name.find('/') != std::string::npos) {
     LOG(ERROR) << "exe_name contains illegal characters: " << exe_name;
     return false;