Roll Fuchsia SDK from 9b4813214fa0 to 8b8ef554dadd

Updates the Fuchsia sysroot location.

TBR=dpranke

Change-Id: I2e4b01fe6d7ed114faa9d00679aaf206d58a3124
Reviewed-on: https://chromium-review.googlesource.com/1146031
Commit-Queue: Wez <wez@chromium.org>
Reviewed-by: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577077}

build/config/sysroot.gni

@@ -68,10 +68,8 @@ if (current_os == target_os && current_cpu == target_cpu &&
   sysroot = ios_sdk_path
 } else if (is_fuchsia) {
   import("//build/config/fuchsia/config.gni")
-  if (current_cpu == "arm64") {
-    sysroot = fuchsia_sdk + "/sysroot/aarch64-fuchsia"
-  } else if (current_cpu == "x64") {
-    sysroot = fuchsia_sdk + "/sysroot/x86_64-fuchsia"
+  if (current_cpu == "arm64" || current_cpu == "x64") {
+    sysroot = fuchsia_sdk + "/arch/$current_cpu/sysroot"
   } else {
     sysroot = ""
   }

build/fuchsia/sdk.sha1

-9b4813214fa05bed350c3beef2650fa7a0604aca
+8b8ef554dadd8a72ac86b1818680bb4d3e421938
\ No newline at end of file