[Merge to M54] Fix regression showing chrome logo in SAML signin title bar

[Merge to M54] Fix regression showing chrome logo in SAML signin title bar

A more specific CSS rule added recently overrides the less specific
rules that hides that logo in various login screens. This CL adds the
class no-logo to those screens for the display manager to hide that logo.

TBR=xiyuan@chromium.org
BUG=647043
TEST=Add a new user with a SAML-enabled account and make sure the unwanted
logo doesn't show up.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2412253002
Cr-Commit-Position: refs/heads/master@{#424879}
(cherry picked from commit 74307c9d468b802c64200aa07c96ba01248b3026)

Committed: https://chromium.googlesource.com/chromium/src/+/31be6fad2470400b02b9bdd6d0a245a3b0670cdc

[afakhry, 2016-10-13 17:06:47]

Description was changed from

==========
[Merge to M54] Fix regression showing chrome logo in SAML signin title bar

A more specific CSS rule added recently overrides the less specific
rules that hides that logo in various login screens. This CL adds the
class no-logo to those screens for the display manager to hide that logo.

TBR=xiyuan@chromium.org
BUG=647043
TEST=Add a new user with a SAML-enabled account and make sure the unwanted
logo doesn't show up.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2412253002
Cr-Commit-Position: refs/heads/master@{#424879}
(cherry picked from commit 74307c9d468b802c64200aa07c96ba01248b3026)
==========

to

==========
[Merge to M54] Fix regression showing chrome logo in SAML signin title bar

A more specific CSS rule added recently overrides the less specific
rules that hides that logo in various login screens. This CL adds the
class no-logo to those screens for the display manager to hide that logo.

TBR=xiyuan@chromium.org
BUG=647043
TEST=Add a new user with a SAML-enabled account and make sure the unwanted
logo doesn't show up.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2412253002
Cr-Commit-Position: refs/heads/master@{#424879}
(cherry picked from commit 74307c9d468b802c64200aa07c96ba01248b3026)

Committed:
https://chromium.googlesource.com/chromium/src/+/31be6fad2470400b02b9bdd6d0a2...
==========

[afakhry, 2016-10-13 17:06:48]

Committed patchset #1 (id:1) manually as
31be6fad2470400b02b9bdd6d0a245a3b0670cdc (presubmit successful).