ARC4RANDOM_EXPORT is defined as extern. Fixes issues in arc4random and libevent.

Solaris specific changes, will not send upstream.

--- a/ipc/chromium/src/third_party/libevent/arc4random.c    2016-03-01 09:29:36.602447178 -0800

+++ b/ipc/chromium/src/third_party/libevent/arc4random.c    2016-03-01 10:17:51.627857034 -0800

@@ -445,8 +445,8 @@ arc4random_stir(void)

 #endif

 #ifndef ARC4RANDOM_NOADDRANDOM

-ARC4RANDOM_EXPORT void

-arc4random_addrandom(const unsigned char *dat, int datlen)

+extern void

+arc4random_addrandom(uchar_t *dat, size_t datlen)

 {

        int j;

        _ARC4_LOCK();

@@ -477,7 +477,7 @@ arc4random(void)

 }

 #endif

-ARC4RANDOM_EXPORT void

+extern void

 arc4random_buf(void *_buf, size_t n)

 {

        unsigned char *buf = _buf;

--- a/config/system-headers	2015-11-03 11:34:17.000000000 +0100

+++ b/config/system-headers	2015-11-09 03:34:24.577525000 +0100

@@ -1064,7 +1064,6 @@

 sys/stat.h

 sys/statvfs.h

 sys/syscall.h

-sys/sysctl.h

 sys/sysinfo.h

 sys/sysmp.h

 sys/syssgi.h

--- a/ipc/chromium/src/third_party/libevent/arc4random.c	2016-03-23 11:47:53.743867536 -0700

+++ b/ipc/chromium/src/third_party/libevent/arc4random.c	2016-03-23 11:48:38.956865864 -0700

@@ -41,6 +41,10 @@

  * RC4 is a registered trademark of RSA Laboratories.

  */

+#if defined (OS_SOLARIS)

+#undef _EVENT_HAVE_SYS_SYSCTL_H

+#endif

+

 #ifndef ARC4RANDOM_EXPORT

 #define ARC4RANDOM_EXPORT

 #endif

@@ -59,7 +61,7 @@

 #include <sys/param.h>

 #include <sys/time.h>

 #ifdef _EVENT_HAVE_SYS_SYSCTL_H

-#include <sys/sysctl.h>

+;//#include <sys/sysctl.h>

 #endif

 #endif

 #include <limits.h>

--- a/ipc/chromium/moz.build	2016-03-28 13:41:06.878922929 -0700

+++ b/ipc/chromium/moz.build	2016-03-28 13:42:04.555448660 -0700

@@ -161,6 +161,23 @@ if os_bsd or os_linux:

             'src/base/message_pump_qt.cc',

         ]

+if os_solaris:

+    SOURCES += [

+	'src/base/atomicops_internals_x86_gcc.cc',

+	'src/base/idle_timer_none.cc',

+	'src/base/process_util_linux.cc',

+	'src/base/time_posix.cc',

+    ]

+    if CONFIG['MOZ_WIDGET_GTK']:

+	SOURCES += [

+            'src/base/message_pump_glib.cc',

+	]

+    if not CONFIG['MOZ_NATIVE_LIBEVENT']:

+	SOURCES += [

+            'src/third_party/libevent/devpoll.c',

+	]

+    LOCAL_INCLUDES += ['src/third_party/libevent/solaris']

+

 ost = CONFIG['OS_TEST']

 if '86' not in ost and 'arm' not in ost and 'mips' not in ost:

     SOURCES += [

diff a/ipc/chromium/src/third_party/libeventcommon.mozbuild b/ipc/chromium/src/third_party/libeventcommon.mozbuild

--- a/ipc/chromium/src/third_party/libeventcommon.mozbuild	2015-11-03 11:34:14.000000000 +0100

+++ b/ipc/chromium/src/third_party/libeventcommon.mozbuild	2015-11-09 03:34:24.579311000 +0100

@@ -9,6 +9,7 @@

 os_openbsd = 0

 os_bsd = 0

 os_linux = 0

+os_solaris = 0

 if CONFIG['OS_ARCH'] == 'WINNT':

     os_win = 1

@@ -21,6 +22,9 @@ else:

                                'NetBSD', 'OpenBSD']:

         os_bsd = 1

         libevent_include_suffix = 'bsd'

+    elif CONFIG['OS_ARCH'] == 'SunOS':

+        os_solaris = 1

+        libevent_include_suffix = 'solaris'

     else:

         os_linux = 1

         if CONFIG['OS_TARGET'] == 'Android':

diff a/ipc/chromium/src/third_party/libevent/event.c b/ipc/chromium/src/third_party/libevent/event.c

--- a/ipc/chromium/src/third_party/libevent/event.c	2015-11-03 11:34:14.000000000 +0100

+++ b/ipc/chromium/src/third_party/libevent/event.c	2015-11-09 03:34:24.485030000 +0100

@@ -70,7 +70,7 @@

 #include "util-internal.h"

 #ifdef _EVENT_HAVE_EVENT_PORTS

-extern const struct eventop evportops;

+//extern const struct eventop evportops;

 #endif

 #ifdef _EVENT_HAVE_SELECT

 extern const struct eventop selectops;

@@ -79,7 +79,7 @@ extern const struct eventop selectops;

 extern const struct eventop pollops;

 #endif

 #ifdef _EVENT_HAVE_EPOLL

-extern const struct eventop epollops;

+//extern const struct eventop epollops;

 #endif

 #ifdef _EVENT_HAVE_WORKING_KQUEUE

 extern const struct eventop kqops;

@@ -94,13 +94,13 @@ extern const struct eventop win32ops;

 /* Array of backends in order of preference. */

 static const struct eventop *eventops[] = {

 #ifdef _EVENT_HAVE_EVENT_PORTS

-	&evportops,

+	//&evportops,

 #endif

 #ifdef _EVENT_HAVE_WORKING_KQUEUE

 	&kqops,

 #endif

 #ifdef _EVENT_HAVE_EPOLL

-	&epollops,

+	//&epollops,

 #endif

 #ifdef _EVENT_HAVE_DEVPOLL

 	&devpollops,

@@ -2883,8 +2883,8 @@

 #endif

 	if (evsig_global_setup_locks_(enable_locks) < 0)

 		return -1;

-	if (evutil_secure_rng_global_setup_locks_(enable_locks) < 0)

-		return -1;

+//	if (evutil_secure_rng_global_setup_locks_(enable_locks) < 0)

+//		return -1;

 	return 0;

 }

 #endif