PRECEDENCE_ASSIGNMENT   52 tools/gn/parser.cc   {NULL, &Parser::Assignment, PRECEDENCE_ASSIGNMENT},           // EQUAL
PRECEDENCE_ASSIGNMENT   55 tools/gn/parser.cc   {NULL, &Parser::Assignment, PRECEDENCE_ASSIGNMENT},           // PLUS_EQUALS
PRECEDENCE_ASSIGNMENT   56 tools/gn/parser.cc   {NULL, &Parser::Assignment, PRECEDENCE_ASSIGNMENT},           // MINUS_EQUALS
PRECEDENCE_ASSIGNMENT  303 tools/gn/parser.cc   scoped_ptr<ParseNode> value = ParseExpression(PRECEDENCE_ASSIGNMENT);