The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/068e8caba560c0afb9a4dff756486a6a8ba51c0b

commit 068e8caba560c0afb9a4dff756486a6a8ba51c0b
Author: xunjieli <xunjieli@chromium.org>
Date: Mon Feb 06 17:50:21 2017

Use base::STLClearObject() in SSLInfo

This CL replaces STL clear() usage with base::STLClearObject() in SSLInfo.

BUG= 689062 

Review-Url: https://codereview.chromium.org/2672423002
Cr-Commit-Position: refs/heads/master@{#448296}

[modify] https://crrev.com/068e8caba560c0afb9a4dff756486a6a8ba51c0b/net/ssl/ssl_info.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/247c7485836209481c53e865856ec7b8ef81178e

commit 247c7485836209481c53e865856ec7b8ef81178e
Author: xunjieli <xunjieli@chromium.org>
Date: Mon Feb 06 17:52:58 2017

Use STLClearObject in URLFetcherCore

URLFetcherCore can be reused for different requests. If it is used for a
chunked upload following a non-chunked upload, we clear the previous
non-chunked upload content by doing |upload_content_|.clear(). However this
might not free up the memory used by |upload_content_|. This CL uses
base::STLClearObject().

BUG= 689062 

Review-Url: https://codereview.chromium.org/2680493002
Cr-Commit-Position: refs/heads/master@{#448297}

[modify] https://crrev.com/247c7485836209481c53e865856ec7b8ef81178e/net/url_request/url_fetcher_core.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c3c226027ca052c366d9b425666ec4fe57aab22d

commit c3c226027ca052c366d9b425666ec4fe57aab22d
Author: xunjieli <xunjieli@chromium.org>
Date: Wed Feb 08 14:03:10 2017

Use base::STLClearObject in QuicServerInfo

std::string::clear() doesn't guarantee to free memory. This CL uses
base::STLClearObject() in QuicServerInfo. See linked bug for more info.

BUG= 689062 

Review-Url: https://codereview.chromium.org/2678333003
Cr-Commit-Position: refs/heads/master@{#448983}

[modify] https://crrev.com/c3c226027ca052c366d9b425666ec4fe57aab22d/net/quic/chromium/quic_server_info.cc

Is there anything left to do before we close this bug?

https://chromium-review.googlesource.com/c/538392/ is WIP