Revert on M57 "Bind Android ChildProcessServices to a specific client PID."

Revert on M57 "Bind Android ChildProcessServices to a specific client PID."

Suspect cause of crbug.com/690118

> Bind Android ChildProcessServices to a specific client PID.
>
> A ChildProcessService may only be setup once, but nothing enforced this limit,
> and a second client of the service would receive no indication of failure. This
> situation could occur with Android WebView in multi-process mode, if two
> android:processes in the same package tried to use WebView.
>
> To solve this issue, introduce an initial handshake message in
> IChildProcessService that must be issued before setupConnection. This method
> binds the service to the calling PID. If that binding fails, the
> ChildProcessLauncher can then re-try creating a service process using the
> next available slot.
>
> BUG=558377, 683133
>
> Review-Url: https://codereview.chromium.org/2626413004
> Cr-Commit-Position: refs/heads/master@{#445779}
> (cherry picked from commit abd3ee77b9cfd7b3d8cf5f95c511e328645f8fde)
>
> Review-Url: https://codereview.chromium.org/2650013003 .
> Cr-Commit-Position: refs/branch-heads/2987@{#68}
> Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

BUG=690118
Review-Url: https://codereview.chromium.org/2695083002 .
Cr-Commit-Position: refs/branch-heads/2987@{#502}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/fd99e1005540fc3c78c0e4661126b22e86403cff

[boliu, 2017-02-14 18:39:56]

Description was changed from

==========
Revert on M57 "Bind Android ChildProcessServices to a specific client PID."

Suspect cause of crbug.com/690118

> Bind Android ChildProcessServices to a specific client PID.
>
> A ChildProcessService may only be setup once, but nothing enforced this limit,
> and a second client of the service would receive no indication of failure.
This
> situation could occur with Android WebView in multi-process mode, if two
> android:processes in the same package tried to use WebView.
>
> To solve this issue, introduce an initial handshake message in
> IChildProcessService that must be issued before setupConnection. This method
> binds the service to the calling PID. If that binding fails, the
> ChildProcessLauncher can then re-try creating a service process using the
> next available slot.
>
> BUG=558377,683133
>
> Review-Url: https://codereview.chromium.org/2626413004
> Cr-Commit-Position: refs/heads/master@{#445779}
> (cherry picked from commit abd3ee77b9cfd7b3d8cf5f95c511e328645f8fde)
>
> Review-Url: https://codereview.chromium.org/2650013003 .
> Cr-Commit-Position: refs/branch-heads/2987@{#68}
> Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

BUG=690118
==========

to

==========
Revert on M57 "Bind Android ChildProcessServices to a specific client PID."

Suspect cause of crbug.com/690118

> Bind Android ChildProcessServices to a specific client PID.
>
> A ChildProcessService may only be setup once, but nothing enforced this limit,
> and a second client of the service would receive no indication of failure.
This
> situation could occur with Android WebView in multi-process mode, if two
> android:processes in the same package tried to use WebView.
>
> To solve this issue, introduce an initial handshake message in
> IChildProcessService that must be issued before setupConnection. This method
> binds the service to the calling PID. If that binding fails, the
> ChildProcessLauncher can then re-try creating a service process using the
> next available slot.
>
> BUG=558377,683133
>
> Review-Url: https://codereview.chromium.org/2626413004
> Cr-Commit-Position: refs/heads/master@{#445779}
> (cherry picked from commit abd3ee77b9cfd7b3d8cf5f95c511e328645f8fde)
>
> Review-Url: https://codereview.chromium.org/2650013003 .
> Cr-Commit-Position: refs/branch-heads/2987@{#68}
> Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

BUG=690118

Review-Url: https://codereview.chromium.org/2695083002 .
Cr-Commit-Position: refs/branch-heads/2987@{#502}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/fd99e1005540fc3c78c0e4661126...
==========

[boliu, 2017-02-14 18:39:58]

Committed patchset #1 (id:1) manually as
fd99e1005540fc3c78c0e4661126b22e86403cff.