use pyyaml from deps

Author: iskakaushik

DEPS

@@ -138,6 +138,8 @@ deps = {
   'src/third_party/spirv_cross':
    Var('github_git') + '/KhronosGroup/SPIRV-Cross.git' + '@' + '418542eaefdb609f548d25a1e3962fb69d80da63',
 
+  'src/third_party/pyyaml':
+   Var('fuchsia_git') + '/third_party/pyyaml' + '@' + '0d71b7df69ec44d1e8cfd81dc580a9612c0e5e21',
 
    # Chromium-style
    #

tools/fuchsia/sdk/find_dart_libraries.py

@@ -13,11 +13,13 @@
 
 import argparse
 import json
-import yaml
 import os
 import sys
 import pkg_resources
 
+ENGINE_SRC_DIR = os.environ["ENGINE_SRC_DIR"]
+sys.path += [os.path.join(ENGINE_SRC_DIR, 'third_party', 'pyyaml', 'lib3')]
+import yaml
 
 def find_package(root, local_paths, package, version):
     """Return the package target if found with at least this version"""