[Mac/iOS/GN] Use rsync in copy_bundle_data instead of shutil.copytree.

testing/buildbot/trybot_analyze_config.json

 {
   "android_webview": {
     "exclusions": [
       "android_webview/.*"
     ]
   },
   "base": {
     "exclusions": [
       ".*isolate",
       "build/.*gyp[i]?",
       "build/android/.*py",
       "build/android/devil/.*",
       "build/android/play_services/.*",
       "build/android/pylib/.*",
       "build/compiler_version.py",
       "build/get_landmines.py",
       "build/gyp_chromium",
       "build/linux/sysroot_ld_path.sh",
       "build/toolchain/get_concurrent_links.py",
+      "build/toolchain/mac/*.py",

[Dan Beam, 2016/07/13 01:20:44]

fyi: this string is fed to re.compile()[1], not glob()[2], so this will match:

  build/toolchain/mac/////.py

but not

  build/toolchain/mac/whatever.py

as you were probably expecting.

[1]
https://cs.chromium.org/chromium/build/scripts/slave/recipe_modules/filter/ap...
[2] https://docs.python.org/2/library/glob.html

       "build/util/lib/common/unittest_util.py",
       "infra/.*",
       "DEPS",
       "testing/buildbot/.*",
       "testing/scripts/.*",
       "testing/test_env.py",
       "third_party/android_platform/development/scripts/.*",
       "tools/clang/blink_gc_plugin/CMakeLists.txt",
       "tools/luci-go/.*"
     ]
@@ skipping 20 matching lines @@
       "tools/perf/.*",
       "tools/telemetry/.*"
     ]
   },
   "ios": {
     "exclusions": [
       "ios/build/bots/.*"
     ]
   }
 }