libchrome: Several upstreamable fixes from libchrome

base/process/process_posix.cc

Index: base/process/process_posix.cc
diff --git a/base/process/process_posix.cc b/base/process/process_posix.cc
index ade82e5ce663be75a4bd376f060d8ad8354fc4b1..3938cd40df239ff5de4168ca4bb33bb7c83d7a49 100644
--- a/base/process/process_posix.cc
+++ b/base/process/process_posix.cc
@@ -295,7 +295,7 @@ void Process::Close() {
 }
 
 #if !defined(OS_NACL_NONSFI)
-bool Process::Terminate(int exit_code, bool wait) const {
+bool Process::Terminate(int /* exit_code */, bool wait) const {
   // exit_code isn't supportable.
   DCHECK(IsValid());
   CHECK_GT(process_, 0);
@@ -364,7 +364,7 @@ bool Process::IsProcessBackgrounded() const {
   return false;
 }
 
-bool Process::SetProcessBackgrounded(bool value) {
+bool Process::SetProcessBackgrounded(bool /*value*/) {
   // Not implemented for POSIX systems other than Linux. With POSIX, if we were
   // to lower the process priority we wouldn't be able to raise it back to its
   // initial priority.