Code: void PreconnectManager::Start(const GURL& url,
                              std::vector<PreconnectRequest> requests) {
  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  const std::string host = url.host();
  if (preresolve_info_.find(host) != preresolve_info_.end())
    return;

  auto iterator_and_whether_inserted = preresolve_info_.emplace(
      host, std::make_unique<PreresolveInfo>(url, requests.size()));
  PreresolveInfo* info = iterator_and_whether_inserted.first->second.get();
 
   for (auto request_it = requests.begin(); request_it != requests.end();
        ++request_it) {
    DCHECK(request_it->origin.GetOrigin() == request_it->origin);
     PreresolveJobId job_id = preresolve_jobs_.Add(
         std::make_unique<PreresolveJob>(std::move(*request_it), info));
     queued_jobs_.push_back(job_id);
  }

  TryToLaunchPreresolveJobs();
}

Vulnerability Type: 
CWE ID: CWE-125
Summary: Insufficient validation of untrusted input in Skia in Google Chrome prior to 59.0.3071.86 for Linux, Windows, and Mac, and 59.0.3071.92 for Android, allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page.
Commit Message: Origins should be represented as url::Origin (not as GURL).

As pointed out in //docs/security/origin-vs-url.md, origins should be
represented as url::Origin (not as GURL).  This CL applies this
guideline to predictor-related code and changes the type of the
following fields from GURL to url::Origin:
- OriginRequestSummary::origin
- PreconnectedRequestStats::origin
- PreconnectRequest::origin

The old code did not depend on any non-origin parts of GURL
(like path and/or query).  Therefore, this CL has no intended
behavior change.

Bug: 973885
Change-Id: Idd14590b4834cb9d50c74ed747b595fe1a4ba357
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1895167
Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
Reviewed-by: Alex Ilin <alexilin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#716311}