Taking this...

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/453c2ddb7e9c33b8e306d48442b4d70342a39717

commit 453c2ddb7e9c33b8e306d48442b4d70342a39717
Author: Sergio Villar Senin <svillar@igalia.com>
Date: Mon Oct 15 11:07:36 2018

Migrate process_dice_header_delegate_impl.cc to IdentityManager

It was using the SinginManager API instead. The unit test was
partially migrated too as the object now receives the IdentityManager
as argument. The test still uses some APIs that will be eventually
replaced by follow up CLs.

Bug:  890791 
Change-Id: I7a2f18bd8ce01eec85954b716b9064a914b613e3
Reviewed-on: https://chromium-review.googlesource.com/c/1278788
Reviewed-by: David Roger <droger@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Commit-Queue: Sergio Villar <svillar@igalia.com>
Cr-Commit-Position: refs/heads/master@{#599611}
[modify] https://crrev.com/453c2ddb7e9c33b8e306d48442b4d70342a39717/chrome/browser/signin/chrome_signin_helper.cc
[modify] https://crrev.com/453c2ddb7e9c33b8e306d48442b4d70342a39717/chrome/browser/signin/process_dice_header_delegate_impl.cc
[modify] https://crrev.com/453c2ddb7e9c33b8e306d48442b4d70342a39717/chrome/browser/signin/process_dice_header_delegate_impl.h
[modify] https://crrev.com/453c2ddb7e9c33b8e306d48442b4d70342a39717/chrome/browser/signin/process_dice_header_delegate_impl_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4cdc95ad6713e3ba3eec5d245a0e41c34ddee003

commit 4cdc95ad6713e3ba3eec5d245a0e41c34ddee003
Author: Sergio Villar Senin <svillar@igalia.com>
Date: Tue Oct 16 15:11:49 2018

Migrate process_dice_header_delegate_impl_unittest.cc to IdentityTestEnvironment

After successfully migrating the ProcessDiceHeaderDelegateImpl we can
complete the job by also migrating the unit test. Several fake objects
were removed in favour of IdentityTestEnvironment which also provides
an IdentityManager.

Bug:  890791 
Change-Id: Ie689268b0b9e2569a4cce5c4abe645d3daa82c7e
Reviewed-on: https://chromium-review.googlesource.com/c/1282743
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Sergio Villar <svillar@igalia.com>
Cr-Commit-Position: refs/heads/master@{#599985}
[modify] https://crrev.com/4cdc95ad6713e3ba3eec5d245a0e41c34ddee003/chrome/browser/signin/process_dice_header_delegate_impl_unittest.cc

Now closing.