[iOS] Integration of ChromeNetLog and NetExportUI

Review URL: https://codereview.chromium.org/1380763003

Cr-Original-Commit-Position: refs/heads/master@{#352013}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 130d7b253e6bdc411ce74c7a712f0e04cbbc9692

ios/grit_whitelist.txt

@@ -26,9 +26,6 @@ IDR_INFOBAR_AUTOLOGIN
 IDR_INFOBAR_RESTORE_SESSION
 IDR_INFOBAR_SAVE_PASSWORD
 IDR_INFOBAR_WARNING
-IDR_NET_ERROR_HTML
-IDR_NET_EXPORT_HTML
-IDR_NET_EXPORT_JS
 IDR_NET_INTERNALS_INDEX_HTML
 IDR_NET_INTERNALS_INDEX_JS
 IDR_OMAHA_HTML
@@ -664,8 +661,6 @@ IDS_NACL_DEBUG_MASK_CHOICE_DEBUG_ALL
 IDS_NACL_DEBUG_MASK_CHOICE_EXCLUDE_UTILS_PNACL
 IDS_NACL_DEBUG_MASK_CHOICE_INCLUDE_DEBUG
 IDS_NETWORK_PREDICTION_ENABLED_DESCRIPTION
-IDS_NET_EXPORT_NO_EMAIL_ACCOUNTS_ALERT_MESSAGE
-IDS_NET_EXPORT_NO_EMAIL_ACCOUNTS_ALERT_TITLE
 IDS_NEW_INCOGNITO_WINDOW_MAC
 IDS_NEW_NUMBERED_PROFILE_NAME
 IDS_NEW_TAB_CHROME_WELCOME_PAGE_TITLE