Update mojo sdk to rev 8d45c89c30b230843c5bd6dd0693a555750946c0

third_party/mojo/src/mojo/public/tools/bindings/mojom_bindings_generator.py

Index: third_party/mojo/src/mojo/public/tools/bindings/mojom_bindings_generator.py
diff --git a/third_party/mojo/src/mojo/public/tools/bindings/mojom_bindings_generator.py b/third_party/mojo/src/mojo/public/tools/bindings/mojom_bindings_generator.py
index 2d1802c05ac6ec723c86f8f6a312a03b97efcd98..0498838a865974946208ed7fc7436f26622c6a00 100755
--- a/third_party/mojo/src/mojo/public/tools/bindings/mojom_bindings_generator.py
+++ b/third_party/mojo/src/mojo/public/tools/bindings/mojom_bindings_generator.py
@@ -34,6 +34,7 @@ sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)),
                                 "pylib"))
 
 from mojom.error import Error
+import mojom.fileutil as fileutil
 from mojom.generate.data import OrderedModuleFromData
 from mojom.parse.parser import Parse
 from mojom.parse.translate import Translate
@@ -50,9 +51,12 @@ def LoadGenerators(generators_string):
     if generator_name.lower() == "c++":
       generator_name = os.path.join(script_dir, "generators",
                                     "mojom_cpp_generator.py")
-    if generator_name.lower() == "dart":
+    elif generator_name.lower() == "dart":
       generator_name = os.path.join(script_dir, "generators",
                                     "mojom_dart_generator.py")
+    elif generator_name.lower() == "go":
+      generator_name = os.path.join(script_dir, "generators",
+                                    "mojom_go_generator.py")
     elif generator_name.lower() == "javascript":
       generator_name = os.path.join(script_dir, "generators",
                                     "mojom_js_generator.py")
@@ -191,7 +195,7 @@ def main():
                       help="output directory for generated files")
   parser.add_argument("-g", "--generators", dest="generators_string",
                       metavar="GENERATORS",
-                      default="c++,dart,javascript,java,python",
+                      default="c++,dart,go,javascript,java,python",
                       help="comma-separated list of generators")
   parser.add_argument("--debug_print_intermediate", action="store_true",
                       help="print the intermediate representation")
@@ -204,8 +208,7 @@ def main():
 
   generator_modules = LoadGenerators(args.generators_string)
 
-  if not os.path.exists(args.output_dir):
-    os.makedirs(args.output_dir)
+  fileutil.EnsureDirectoryExists(args.output_dir)
 
   processor = MojomProcessor(lambda filename: filename in args.filename)
   for filename in args.filename: