Add support for loading extensions (issue #1947)

- Add CefRequestContext::LoadExtension, CefExtension, CefExtensionHandler and
  related methods/interfaces.
- Add chrome://extensions-support that lists supported Chrome APIs.
- Add CefBrowserHost::SetAutoResizeEnabled and CefDisplayHandler::OnAutoResize
  to support browser resize based on preferred web contents size.
- views: Add support for custom CefMenuButton popups.
- cefclient: Run with `--load-extension=set_page_color` command-line flag for
  an extension loading example. Add `--use-views` on Windows and Linux for an
  even better example.

tools/cef_parser.py

@@ -99,7 +99,8 @@ def get_comment(body, name):
     if len(line) == 0:
       # check if the next previous line is a comment
       prevdata = get_prev_line(body, pos)
-      if string.strip(prevdata['line'])[0:2] == '//':
+      prevline = string.strip(prevdata['line'])
+      if prevline[0:2] == '//' and prevline[0:3] != '///':
         result.append(None)
       else:
         break
@@ -538,26 +539,6 @@ class obj_header:
     p = re.compile('\nclass' + _cre_space + _cre_cfname + ';')
     forward_declares = p.findall(data)
 
-    # extract classes
-    p = re.compile('\n' + _cre_attrib + '\nclass' + _cre_space + _cre_cfname +
-                   _cre_space + ':' + _cre_space + 'public' + _cre_virtual +
-                   _cre_space + _cre_cfname + _cre_space + '{(.*?)\n};',
-                   re.MULTILINE | re.DOTALL)
-    list = p.findall(data)
-    if len(list) > 0:
-      added = True
-
-      # build the class objects
-      for attrib, name, parent_name, body in list:
-        # Style may place the ':' on the next line.
-        comment = get_comment(data, name + ' :')
-        if len(comment) == 0:
-          comment = get_comment(data, name + "\n")
-        validate_comment(filename, name, comment)
-        self.classes.append(
-            obj_class(self, filename, attrib, name, parent_name, body, comment,
-                      includes, forward_declares))
-
     # extract empty classes
     p = re.compile('\n' + _cre_attrib + '\nclass' + _cre_space + _cre_cfname +
                    _cre_space + ':' + _cre_space + 'public' + _cre_virtual +
@@ -578,6 +559,30 @@ class obj_header:
             obj_class(self, filename, attrib, name, parent_name, "", comment,
                       includes, forward_declares))
 
+      # Remove empty classes from |data| so we don't mess up the non-empty
+      # class search that follows.
+      data = p.sub('', data)
+
+    # extract classes
+    p = re.compile('\n' + _cre_attrib + '\nclass' + _cre_space + _cre_cfname +
+                   _cre_space + ':' + _cre_space + 'public' + _cre_virtual +
+                   _cre_space + _cre_cfname + _cre_space + '{(.*?)\n};',
+                   re.MULTILINE | re.DOTALL)
+    list = p.findall(data)
+    if len(list) > 0:
+      added = True
+
+      # build the class objects
+      for attrib, name, parent_name, body in list:
+        # Style may place the ':' on the next line.
+        comment = get_comment(data, name + ' :')
+        if len(comment) == 0:
+          comment = get_comment(data, name + "\n")
+        validate_comment(filename, name, comment)
+        self.classes.append(
+            obj_class(self, filename, attrib, name, parent_name, body, comment,
+                      includes, forward_declares))
+
     if added:
       # a global function or class was read from the header file
       self.filenames.append(filename)

tools/make_cpptoc_impl.py

@@ -613,9 +613,15 @@ def make_cpptoc_class_impl(header, clsname, impl):
   # any derived classes can be unwrapped
   unwrapderived = make_cpptoc_unwrap_derived(header, cls, base_scoped)
 
+  const =  '// CONSTRUCTOR - Do not edit by hand.\n\n'+ \
+           clsname+'CppToC::'+clsname+'CppToC() {\n'
+  const += make_cpptoc_virtual_function_assignment(header, cls, prefixname,
+                                                   defined_names)
+  const += '}\n\n'
+
   # determine what includes are required by identifying what translation
   # classes are being used
-  includes = format_translation_includes(header, resultingimpl +
+  includes = format_translation_includes(header, const + resultingimpl +
                                          (unwrapderived[0]
                                           if base_scoped else unwrapderived))
 
@@ -626,12 +632,6 @@ def make_cpptoc_class_impl(header, clsname, impl):
 
   parent_sig = template_class + '<' + clsname + 'CppToC, ' + clsname + ', ' + capiname + '>'
 
-  const =  '// CONSTRUCTOR - Do not edit by hand.\n\n'+ \
-           clsname+'CppToC::'+clsname+'CppToC() {\n'
-  const += make_cpptoc_virtual_function_assignment(header, cls, prefixname,
-                                                   defined_names)
-  const += '}\n\n'
-
   if base_scoped:
     const += 'template<> CefOwnPtr<'+clsname+'> '+parent_sig+'::UnwrapDerivedOwn(CefWrapperType type, '+capiname+'* s) {\n' + \
              unwrapderived[0] + \

tools/make_ctocpp_impl.py

@@ -610,9 +610,13 @@ def make_ctocpp_class_impl(header, clsname, impl):
   # any derived classes can be unwrapped
   unwrapderived = make_ctocpp_unwrap_derived(header, cls, base_scoped)
 
+  const =  '// CONSTRUCTOR - Do not edit by hand.\n\n'+ \
+           clsname+'CToCpp::'+clsname+'CToCpp() {\n'+ \
+           '}\n\n'
+
   # determine what includes are required by identifying what translation
   # classes are being used
-  includes = format_translation_includes(header, resultingimpl +
+  includes = format_translation_includes(header, const + resultingimpl +
                                          (unwrapderived[0]
                                           if base_scoped else unwrapderived))
 
@@ -623,10 +627,6 @@ def make_ctocpp_class_impl(header, clsname, impl):
 
   parent_sig = template_class + '<' + clsname + 'CToCpp, ' + clsname + ', ' + capiname + '>'
 
-  const =  '// CONSTRUCTOR - Do not edit by hand.\n\n'+ \
-           clsname+'CToCpp::'+clsname+'CToCpp() {\n'+ \
-           '}\n\n'
-
   if base_scoped:
     const += 'template<> '+capiname+'* '+parent_sig+'::UnwrapDerivedOwn(CefWrapperType type, CefOwnPtr<'+clsname+'> c) {\n'+ \
              unwrapderived[0] + \

tools/make_distrib.py

@@ -618,6 +618,8 @@ if mode == 'standard':
                       'tests/cefclient/', cefclient_dir, options.quiet)
   transfer_gypi_files(cef_dir, cef_paths2['cefclient_sources_resources'], \
                       'tests/cefclient/', cefclient_dir, options.quiet)
+  transfer_gypi_files(cef_dir, cef_paths2['cefclient_sources_resources_extensions_set_page_color'], \
+                      'tests/cefclient/', cefclient_dir, options.quiet)
 
   # transfer common cefsimple files
   transfer_gypi_files(cef_dir, cef_paths2['cefsimple_sources_common'], \