This patch moves the following methods from the traits objects to
the (pre)parser implementation objects:

- AddFormalParameter
- AddParameterInitializationBlock
- DeclareFormalParameter
- ExpressionListToExpression
- GetNonPatternList
- GetReportedErrorList
- IsTaggedTemplate
- MaterializeUnspreadArgumentsLiterals
- NoTemplateTag
- ParseArrowFunctionFormalParameterList
- ReindexLiterals
- SetFunctionNameFromIdentifierRef
- SetFunctionNameFromPropertyName

It moves the Void method from the preparser traits object to the
preparser implementation object.  It also removes the traits zone
method and replaces it with that of ParserBase, which it turns to
public.

After all this, the traits objects contain just typedefs and the
delegate methods are no more necessary.

R=adamk@chromium.org, marja@chromium.org
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2277843002
Cr-Commit-Position: refs/heads/master@{#38892}