bind-gen: Implement accessor APIs for V8 context snapshot

Bug: 839389
Change-Id: Icc338ca2394f1f32265d318ab7ea530784f4b29b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2249403
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#780215}

third_party/blink/renderer/bindings/scripts/bind_gen/code_node_cxx.py

@@ -249,6 +249,7 @@ class CxxFuncDeclNode(CompositeNode):
             default: True makes this have the default implementation.
             delete: True makes this function be deleted.
         """
+        assert isinstance(name, str)
         assert isinstance(static, bool)
         assert isinstance(explicit, bool)
         assert isinstance(constexpr, bool)
@@ -330,6 +331,7 @@ class CxxFuncDefNode(CompositeNode):
             override: True makes this an overriding function.
             member_initializer_list: List of member initializers.
         """
+        assert isinstance(name, str)
         assert isinstance(static, bool)
         assert isinstance(inline, bool)
         assert isinstance(explicit, bool)
@@ -372,6 +374,7 @@ class CxxFuncDefNode(CompositeNode):
                 separator=", ",
                 head=" : ")
 
+        self._function_name = name
         self._body_node = SymbolScopeNode()
 
         CompositeNode.__init__(
@@ -392,6 +395,10 @@ class CxxFuncDefNode(CompositeNode):
             member_initializer_list=member_initializer_list,
             body=self._body_node)
 
+    @property
+    def function_name(self):
+        return self._function_name
+
     @property
     def body(self):
         return self._body_node

third_party/blink/renderer/bindings/scripts/generate_bindings.py

@@ -86,6 +86,8 @@ def main():
         out = sys.stdout
         if not out.isatty():
             return
+        if total == 0:
+            return
         percentage = int(float(done) / float(total) * 100)
         message = "Blink-V8 bindings generation: {}% done\r".format(percentage)
         out.write(message)