Fixed permission check in SystemAccountManagerDelegate.updateCredentials

Fixed permission check in SystemAccountManagerDelegate.updateCredentials

Checking hasGetAccountsPermission before calling android.AccountManager.updateCredentials
is irrelevant, because this call never required GET_ACCOUNTS permission.
Added check for MANAGE_ACCOUNTS permission that was required before
Android M. On M+ it doesn't require any special permission.

BUG=699050
Review-Url: https://codereview.chromium.org/2745533002
Cr-Commit-Position: refs/heads/master@{#456124}
(cherry picked from commit 6e26494d0caa38a608ecd3c7852a58387dcaaf96)

Review-Url: https://codereview.chromium.org/2751973004 .
Cr-Commit-Position: refs/branch-heads/3029@{#235}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/9609fe5d7016961497955f2d59b691e84fb92402

[jlebel, 2017-03-16 10:30:57]

Description was changed from

==========
Fixed permission check in SystemAccountManagerDelegate.updateCredentials

Checking hasGetAccountsPermission before calling
android.AccountManager.updateCredentials
is irrelevant, because this call never required GET_ACCOUNTS permission.
Added check for MANAGE_ACCOUNTS permission that was required before
Android M. On M+ it doesn't require any special permission.

BUG=699050

Review-Url: https://codereview.chromium.org/2745533002
Cr-Commit-Position: refs/heads/master@{#456124}
(cherry picked from commit 6e26494d0caa38a608ecd3c7852a58387dcaaf96)
==========

to

==========
Fixed permission check in SystemAccountManagerDelegate.updateCredentials

Checking hasGetAccountsPermission before calling
android.AccountManager.updateCredentials
is irrelevant, because this call never required GET_ACCOUNTS permission.
Added check for MANAGE_ACCOUNTS permission that was required before
Android M. On M+ it doesn't require any special permission.

BUG=699050

Review-Url: https://codereview.chromium.org/2745533002
Cr-Commit-Position: refs/heads/master@{#456124}
(cherry picked from commit 6e26494d0caa38a608ecd3c7852a58387dcaaf96)

Review-Url: https://codereview.chromium.org/2751973004 .
Cr-Commit-Position: refs/branch-heads/3029@{#235}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/9609fe5d7016961497955f2d59b6...
==========

[jlebel, 2017-03-16 10:30:59]

Committed patchset #1 (id:1) manually as
9609fe5d7016961497955f2d59b691e84fb92402.