Add support for Chrome Apps to IDL lexer/parser

ppapi/generators/idl_lexer.py

Index: ppapi/generators/idl_lexer.py
diff --git a/ppapi/generators/idl_lexer.py b/ppapi/generators/idl_lexer.py
index d33414c3daf0cc38d5ca66f5a15e1755b3a3aeae..d45a4b8ea425110e3314946a42f844c98a565602 100755
--- a/ppapi/generators/idl_lexer.py
+++ b/ppapi/generators/idl_lexer.py
@@ -55,6 +55,16 @@ class IDLLexer(object):
       'STRUCT',
       'TYPEDEF',
 
+    # Extra WebIDL keywords
+      'CALLBACK',
+      'DICTIONARY',
+      'OPTIONAL',
+      'STATIC',
+
+    # Invented for apps use
+      'NAMESPACE',
+
+
     # Data types
       'FLOAT',
       'OCT',
@@ -77,11 +87,17 @@ class IDLLexer(object):
     'readonly' : 'READONLY',
     'struct' : 'STRUCT',
     'typedef' : 'TYPEDEF',
+
+    'callback' : 'CALLBACK',
+    'dictionary' : 'DICTIONARY',
+    'optional' : 'OPTIONAL',
+    'static' : 'STATIC',
+    'namespace' : 'NAMESPACE',
   }
 
   # 'literals' is a value expected by lex which specifies a list of valid
   # literal tokens, meaning the token type and token value are identical.
-  literals = '"*.(){}[],;:=+-/~|&^'
+  literals = '"*.(){}[],;:=+-/~|&^?'
 
   # Token definitions
   #
@@ -116,7 +132,7 @@ class IDLLexer(object):
 
   # A C or C++ style comment:  /* xxx */ or //
   def t_COMMENT(self, t):
-    r'(/\*(.|\n)*?\*/)|(//.*)'
+    r'(/\*(.|\n)*?\*/)|(//.*(\n[ \t]*//.*)*)'
     self.AddLines(t.value.count('\n'))
     return t