Some network label caveats
* Cr-UI-Browser-Downloads:  Despite the name, this covers all issues related to
    downloading a file except saving entire pages (Which is Cr-Blink-SavePage),
    not just UI issues.  Most downloads bugs will have the word "download" or
    "save as" in the description. Issues with the HTTP server for the Chrome
    binaries are not downloads bugs.
* Cr-UI-Browser-SafeBrowsing:  Bugs that have to do with the process by which a
    URL or file is determined to be dangerous based on our databases, or the
    resulting interstitials. Determination of danger based purely on
    content-type or file extension belongs in Cr-UI-Browser-Downloads, not
    SafeBrowsing.
* Cr-Internals-Network-SSL:  This includes issues that should be also tagged as
    Cr-Security-UX (certificate error pages or other security interstitials,
    omnibox indicators that a page is secure), and more general SSL issues.  If
    you see requests that die in the SSL negotiation phase, in particular, this
    is often the correct label.
* Cr-Internals-Network-DataProxy:  Flywheel / the Data Reduction Proxy.  Issues
    require "Reduce Data Usage" be turned on.  Proxy url is
    https://proxy.googlezip.net:443, with compress.googlezip.net:80 as a
    fallback.  Currently Android and iOS only.
* Cr-Internals-Network-Cache:  The cache is the layer that handles most range
    request logic (Though range requests may also be issued by the PDF plugin,
    XHRs, or other components).
* Cr-Internals-Network-SPDY:  Covers HTTP2 as well.
* Cr-Internals-Network-HTTP:  Typically not used.  Unclear what it covers, and
    there's no specific HTTP owner.
* Cr-Internals-Network-Logging:  Covers about:net-internals, about:net-export as
    well as the what's sent to the NetLog.
* Cr-Internals-Network-Connectivity:  Issues related to switching between
    networks, ERR_NETWORK_CHANGED, Chrome thinking it's online when it's not /
    navigator.onLine inaccuracies, etc.
* Cr-Internals-Network-Filters:  Covers SDCH and gzip issues.
    ERR_CONTENT_DECODING_FAILED indicates a problem at this layer, and bugs here
    can also cause response body corruption.


Common non-network label reference.  Bugs in these areas often receive the
Cr-Internals-Network label, though they fall largely outside the purview of the
network stack team:
* Cr-Blink-Forms:  Issues submitting forms, forms having weird data, forms
    sending the wrong method, etc.
* Cr-Blink-Loader:  Cross origin issues are sometimes loader related.  Blink
    also has an in-memory cache, and when it's used, requests don't appear in
    about:net-internals.  Requests for the same URL are also often merged there
    as well.  This does *not* cover issues with content/browser/loader/ files.
* Cr-Blink-ServiceWorker
* Cr-Blink-Storage-AppCache
* Cr-Blink-WebSockets
* Cr-Blink-XHR:  Generic issues with sync/async XHR requests - missing request
    or response headers, multiple headers, etc.  These will often run into
    issues in certain corner cases (Cross origin / CORS, proxy, whatever).
    Attach all labels that seem appropriate.
* Cr-Services-Sync:  Sharing data/tabs/history/passwords/etc between machines
    not working.
* Cr-Services-Chromoting
* Cr-Platform-Extensions:  Issues extensions loading / not loading / hanging.
* Cr-Platform-Extensions-API:  Issues with network related extension APIs should
    have this label. chrome.webRequest is the big one, I believe, but there are
    others.
* Cr-Internals-Plugins-Pepper[-SDK]
* Cr-UI-Browser-Omnibox:  Basically any issue with the omnibox.  URLs being
    treated as search queries rather than navigations, dropdown results being
    weird, not handling certain unicode characters, etc.  If the issue is new
    TLDs not being recognized by the omnibox, that's due to Chrome's TLD list
    being out of date, and not an omnibox issue.  Such TLD issues should be
    duped against http://crbug.com/37436.
* Cr-Internals-Media-Network:  Issues related to media.  These often run into
    the 6 requests per hostname issue, and also have fun interactions with the
    cache, particularly in the range request case.
* Cr-Internals-Plugins-PDF:  Issues loading pdf files.  These are often related
    to range requests, which also have some logic at the Internals-Network-Cache
    layer.
* Cr-UI-Browser-Navigation
* Cr-UI-Browser-History:  Issues which only appear with forward/back navigation.
* Cr-OS-Systems-Network / Cr-OS-Systems-Mobile / Cr-OS-Systems-Bluetooth:  These
    should be used for issues with ChromeOS's platform network code, and not
    net/ issues on ChromeOS.
* Cr-Blink-SecurityFeature:  CORS / Cross origin issues.  Main frame
    cross-origin navigation issues are often actually Cr-UI-Browser-Navigation
    issues.
* Cr-Privacy:  Privacy related bug (History, cookies discoverable by an entity
    that shouldn't be able to do so, incognito state being saved in memory or on
    disk beyond the lifetime of incognito tabs, etc).  Generally used in
    conjunction with other labels.
* Type-Bug-Security:  Security related bug (Allows for code execution from
    remote site, allows crossing security boundaries, unchecked array bounds,
    etc).