tools: fix GYP ninja generator for Python 3

PR-URL: #29416
Reviewed-By: Christian Clauss <cclauss@me.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

tools/gyp/pylib/gyp/generator/ninja.py

@@ -355,7 +355,7 @@ def WriteCollapsedDependencies(self, name, targets, order_only=None):
 
     Uses a stamp file if necessary."""
 
-    assert targets == filter(None, targets), targets
+    assert targets == [item for item in targets if item], targets
     if len(targets) == 0:
       assert not order_only
       return None
@@ -432,8 +432,8 @@ def WriteSpec(self, spec, config_name, generator_flags):
           compile_depends.append(target.PreCompileInput())
           if target.uses_cpp:
             self.target.uses_cpp = True
-      actions_depends = filter(None, actions_depends)
-      compile_depends = filter(None, compile_depends)
+      actions_depends = [item for item in actions_depends if item]
+      compile_depends = [item for item in compile_depends if item]
       actions_depends = self.WriteCollapsedDependencies('actions_depends',
                                                         actions_depends)
       compile_depends = self.WriteCollapsedDependencies('compile_depends',
@@ -2381,6 +2381,7 @@ def GenerateOutputForConfig(target_list, target_dicts, data, params,
 
     qualified_target_for_hash = gyp.common.QualifiedTarget(build_file, name,
                                                            toolset)
+    qualified_target_for_hash = qualified_target_for_hash.encode('utf-8')
     hash_for_rules = hashlib.md5(qualified_target_for_hash).hexdigest()
 
     base_path = os.path.dirname(build_file)