Rename output filenames of make_event_factory.py

One of output files was "Event.cpp". move_blink_source.py confused with
it because it was same as core/dom/events/Event.cpp. Also it was not a
proper name because the generated "Event.cpp" was an implementation of
blink::EventFactory class.

This CL renames Event(Modules).cpp to event_(modules_)factory.cc to
match to C++ class names, and prepare for the great Blink mv. Also,
renames Event(Modules)Headers.h to event_(modules_)headers.h for
consistency.

Bug: 578345
Change-Id: Ie3c6e951a01ca88376527f6f5c32357d4707016b
Reviewed-on: https://chromium-review.googlesource.com/670222
Commit-Queue: Kent Tamura <tkent@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#502784}

third_party/WebKit/Source/bindings/modules/BUILD.gn

@@ -70,8 +70,8 @@ make_event_factory("event_modules") {
   visibility = [ ":*" ]
   in_files = [ "$root_gen_dir/blink/EventModulesInterfaces.json5" ]
   outputs = [
-    "$blink_modules_output_dir/EventModules.cpp",
-    "$blink_modules_output_dir/EventModulesHeaders.h",
+    "$blink_modules_output_dir/event_modules_factory.cc",
+    "$blink_modules_output_dir/event_modules_headers.h",
   ]
   deps = make_core_generated_deps + [ "//third_party/WebKit/Source/bindings/modules:modules_bindings_generated_event_interfaces" ]
   deps += [

third_party/WebKit/Source/build/scripts/make_event_factory.py

@@ -123,8 +123,11 @@ class EventFactoryWriter(json5_generator.Writer):
         self.namespace = self.json5_file.metadata['namespace'].strip('"')
         assert self.namespace == 'Event', 'namespace field should be "Event".'
         self.suffix = self.json5_file.metadata['suffix'].strip('"')
-        self._outputs = {('Event%sHeaders.h' % self.suffix): self.generate_headers_header,
-                         ('Event%s.cpp' % self.suffix): self.generate_implementation,
+        snake_suffix = (self.suffix.lower() + '_') if self.suffix else ''
+        self._headers_header_basename = 'event_%sheaders.h' % snake_suffix
+        self._outputs = {
+            self._headers_header_basename: self.generate_headers_header,
+            ('event_%sfactory.cc' % snake_suffix): self.generate_implementation,
         }
 
     def _fatal(self, message):
@@ -163,7 +166,7 @@ class EventFactoryWriter(json5_generator.Writer):
     def generate_headers_header(self):
         base_header_for_suffix = ''
         if self.suffix:
-            base_header_for_suffix = '\n#include "core/EventHeaders.h"\n'
+            base_header_for_suffix = '\n#include "core/event_headers.h"\n'
         return HEADER_TEMPLATE % {
             'input_files': self._input_files,
             'license': license.license_for_generated_cpp(),
@@ -175,6 +178,7 @@ class EventFactoryWriter(json5_generator.Writer):
     @template_expander.use_jinja('templates/EventFactory.cpp.tmpl', filters=filters)
     def generate_implementation(self):
         return {
+            'headers_header_basename': self._headers_header_basename,
             'input_files': self._input_files,
             'suffix': self.suffix,
             'events': self.json5_file.name_dictionaries,

third_party/WebKit/Source/build/scripts/templates/EventFactory.cpp.tmpl

@@ -9,8 +9,8 @@
 #include "core/events/EventFactory.h"
 {% endif %}
 
-#include "Event{{suffix}}Headers.h"
 #include "core/frame/Deprecation.h"
+#include "{{headers_header_basename}}"
 #include "platform/runtime_enabled_features.h"
 
 namespace blink {

third_party/WebKit/Source/core/BUILD.gn

@@ -900,8 +900,8 @@ make_event_factory("make_core_generated_event_factory") {
     "events/EventAliases.json5",
   ]
   outputs = [
-    "$blink_core_output_dir/Event.cpp",
-    "$blink_core_output_dir/EventHeaders.h",
+    "$blink_core_output_dir/event_factory.cc",
+    "$blink_core_output_dir/event_headers.h",
   ]
 }