Where can I find ContactsListActivity?

I'm firing off an intent that opens up a list of my contacts, but so far I'm unable to find the resulting activity (ContactsListActivity) anywhere in the android source code. I've tried grepping the platform 10 source code, and searching on https://android.googlesource.com. Anyone know where I can find this?

The intent looks l开发者_如何学Goike the following:

new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);

And logcat gives the following output:

I/ActivityManager(   52): Starting activity: Intent { act=android.intent.action.PICK dat=content://com.android.contacts/contacts cmp=com.android.contacts/.ContactsListActivity }
I/ContactsListActivity(  104): Called with action: android.intent.action.PICK
I/ActivityManager(   52): Displayed activity com.android.contacts/.ContactsListActivity: 518 ms (total 518 ms)

The contacts app in the source code does not seem to contain this activity either: https://android.googlesource.com/platform/packages/apps/Contacts/+/froyo-release/src/com/android/contacts/ui

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It is in package com.android.contacts:

https://android.googlesource.com/platform/packages/apps/Contacts/+/froyo-release/src/com/android/contacts/ContactsListActivity.java