fuchsia: get //ipc compiling

Links but 25/80 tests crash.

Bug: 734791
Change-Id: I0e53a60c33ec016bb051b661eaa398d246b6d5eb
Reviewed-on: https://chromium-review.googlesource.com/540288Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Scott Graham <scottmg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481724}

ipc/BUILD.gn

@@ -207,6 +207,13 @@ if (!is_ios) {
     if (is_mac) {
       deps += [ "//sandbox/mac:seatbelt" ]
     }
+
+    if (is_fuchsia) {
+      sources -= [
+        # No AF_UNIX domain sockets on Fuchsia.
+        "sync_socket_unittest.cc",
+      ]
+    }
   }
 
   test("ipc_perftests") {

ipc/ipc_message_utils.h

@@ -208,10 +208,10 @@ struct ParamTraits<unsigned int> {
 //      very few IPCs that cross this boundary.
 //   2) We also need to keep it for Linux for two reasons: int64_t is typedef'd
 //      to long, and gfx::PluginWindow is long and is used in one GPU IPC.
-//   3) Android 64 bit also has int64_t typedef'd to long.
+//   3) Android 64 bit and Fuchsia also have int64_t typedef'd to long.
 // Since we want to support Android 32<>64 bit IPC, as long as we don't have
 // these traits for 32 bit ARM then that'll catch any errors.
-#if defined(OS_WIN) || defined(OS_LINUX) || \
+#if defined(OS_WIN) || defined(OS_LINUX) || defined(OS_FUCHSIA) || \
     (defined(OS_ANDROID) && defined(ARCH_CPU_64_BITS))
 template <>
 struct ParamTraits<long> {