Add first sketch of the webmodules code generator.

third_party/WebKit/Source/bindings/templates/cpp_interface.cpp.tmpl

Index: third_party/WebKit/Source/bindings/templates/cpp_interface.cpp.tmpl
diff --git a/third_party/WebKit/Source/bindings/templates/cpp_interface.cpp.tmpl b/third_party/WebKit/Source/bindings/templates/cpp_interface.cpp.tmpl
new file mode 100644
index 0000000000000000000000000000000000000000..8bd94eb3c6fbd7d1026276311305030afe8c6bd1
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/templates/cpp_interface.cpp.tmpl
@@ -0,0 +1,35 @@
+{% filter format_blink_cpp_source_code %}
+
+{% include 'copyright_block.txt' %}

[Yuki, 2016/11/01 12:58:54]

copyright_block.txt includes // clang-format off, so you might want to enable it
again just after this line.  Given you're going to start to implement this from
scratch, you may want to follow clang-format from the beginning.

[dglazkov, 2016/11/04 21:03:07]

Done.

+
+#include "Cpp{{class_name}}.h"
+
+// TODO(dglazkov): Implement generating includes.
+{% for filename in cpp_includes %}
+#include "{{filename}}"
+{% endfor %}
+
+namespace blink {
+namespace api {
+
+// TODO(dglazkov): Implement constant generation
+{% for constant in constants %}
+// {{ constant.name }}
+{% endfor %}
+
+// TODO(dglazkov): Implement constructor generation
+
+// TODO(dglazkov): Implement attribute getter/setter generation
+{% for attribute in attributes %}
+// {{attribute.name}}
+{% endfor %}
+
+// TODO(dglazkov): Implement method generation
+{% for method in methods %}
+// {{method.cpp_type}} Cpp{{class_name}}::{{method.name}}
+{% endfor %}
+
+}

[Yuki, 2016/11/01 12:58:54]

nit:
}  // namespace api

[dglazkov, 2016/11/04 21:03:07]

Done.

+}
+
+{% endfilter %}