Add process type to MicroDumpExtraInfo

client/linux/microdump_writer/microdump_writer.cc

Index: client/linux/microdump_writer/microdump_writer.cc
diff --git a/client/linux/microdump_writer/microdump_writer.cc b/client/linux/microdump_writer/microdump_writer.cc
index 26f7250f490c09f533f242d92ce28616274dd312..b1f8949fbcf3c6b28adbbd54e929282ae710a21c 100644
--- a/client/linux/microdump_writer/microdump_writer.cc
+++ b/client/linux/microdump_writer/microdump_writer.cc
@@ -164,6 +164,7 @@ class MicrodumpWriter {
     LogLine("-----BEGIN BREAKPAD MICRODUMP-----");
     DumpProductInformation();
     DumpOSInformation();
+    DumpProcessType();
     DumpGPUInformation();
 #if !defined(__LP64__)
     DumpFreeSpace();
@@ -233,6 +234,16 @@ class MicrodumpWriter {
     LogCommitLine();
   }
 
+  void DumpProcessType() {
+    LogAppend("P ");

[hush (inactive), 2016/06/22 20:46:01]

Hello Torne, do you know if this letter matter?
I see we've already have V, O, A, L, G, S etc. Does anything tries to parse the
string based on the first letter of each line?

[Torne, 2016/06/23 13:31:37]

Yes, the processor uses the letter to determine what data the line contains,
since they aren't otherwise self-explaining. This should be fine. I believe it
just ignores unknown lines, but you could check with Maria to be sure?

+    if (microdump_extra_info_.process_type) {
+      LogAppend(microdump_extra_info_.process_type);
+    } else {
+      LogAppend("UNKOWN");

[Torne, 2016/06/23 13:31:37]

Missing an "N" :)

+    }
+    LogCommitLine();
+  }
+
   void DumpOSInformation() {
     const uint8_t n_cpus = static_cast<uint8_t>(sysconf(_SC_NPROCESSORS_CONF));