GitLab

Moves TraceWrapperMember, SharedPersistent, IDLDictionaryBase and ToV8 to platform/bindings. Also moves some ScriptValue functions in ToV8 to ToV8ForCore as ScriptValue is not moving to platform/bindings right now.

BUG=682322

Review-Url: https://codereview.chromium.org/2843143002
Cr-Commit-Position: refs/heads/master@{#468053}