Roll Fuchsia SDK to 226f6dd0cad1d6be63a353ce2649423470729ae9.

This roll includes:
- Redefinition of zx_handle_t from int to unsigned int, requiring fixes
  to call-sites that tried to reinterpret_cast<zx_handle_t>(int).
- Move of sysroot files to per-architecture sub-directories, as part of
  ARM64 bring-up.

Bug: 707030, 772031
Change-Id: If65230b296c9a07eee3460cb9abbd5e7f7beeb30
Reviewed-on: https://chromium-review.googlesource.com/703989
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#507143}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f88170e15156f33171b07465cc0b6042dd130ef4

fuchsia/runner_common.py

@@ -243,7 +243,9 @@ def BuildBootfs(output_directory, runtime_deps, bin_name, child_args, dry_run,
   if _RunAndCheck(
       dry_run,
       [mkbootfs_path, '-o', bootfs_name,
-       '--target=boot', os.path.join(SDK_ROOT, 'bootdata.bin'),
+       # TODO(wez): Parameterize this on the |target_cpu| from GN.
+       '--target=boot', os.path.join(
+           SDK_ROOT, 'target', 'x86_64', 'bootdata.bin'),
        '--target=system', manifest_file.name]) != 0:
     return None
 
@@ -361,7 +363,8 @@ def _GetResultsFromImg(dry_run, test_launcher_summary_output):
 
 
 def RunFuchsia(bootfs_data, use_device, dry_run, test_launcher_summary_output):
-  kernel_path = os.path.join(SDK_ROOT, 'kernel', 'zircon.bin')
+  # TODO(wez): Parameterize this on the |target_cpu| from GN.
+  kernel_path = os.path.join(SDK_ROOT, 'target', 'x86_64', 'zircon.bin')
 
   if use_device:
     # TODO(fuchsia): This doesn't capture stdout as there's no way to do so