Revert of Update ICU to 56.1 + local changes from 54.1 (patchset #8 id:140001 of https://codereview.chromium.org/1650073002/ )

Reason for revert:
ICU 56.1 introduced a new static initializer (RANGE_MAKER in range.cpp). A regression in si is not acceptable.

It appears trivial to fix this issue (I don't see a reason to use a static UnicodeString for RANGE_MAKER). I'll reland after fixing it.

When reverting, TestExpectation has to be kept because rebaseline bot already went through a cycle.

Original issue's description:
> Roll ICU to 56.1 + local changes from ICU 54.1
>
> https://chromium.googlesource.com/chromium/deps/icu.git/+log/8d342a4..8a6c927b
>
> ICU 56 brings us, among a number of changes,
>
> - Unicode 8.0 (from Unicode 7.0)
> - CLDR 28 (from CLDR 26): better and up to date locale data
> - Reduced data size thanks to improved string sharing: This helps Chrome's icu data file size under control despite a large increase in the number of locale strings.
> - Formatter creation perf
> - Better caching of formatting objects
> - New line break iterator variants for CSS3
> - Collator perf improvement
> - A lot of bug fixes (security or others) some of which are from Chromium.
>
> For more details, see
> http://site.icu-project.org/download/56 for 56.1 release
> http://site.icu-project.org/download/55 for 55.1 release
>
> data size change from ICU 54.1
>
> - CrOS, Linux, Win, Mac: 10,207,936 => 10,124,096 (delta=-83,840)
>
> - Android: 6,268,240 => 6,560,080 (delta=291,840, 4.7%)
>
> Android data size gets larger because savings from string sharing didn't make up for the locale data size increase from CLDR update.
>
> In addition to rolling ICU to 0c9a780 (56.1 + local changes) from
> ICU 54.1, ScriptRun test was adjusted as well as the expected result
> for Russian short month names.
>
> Noto to Sheriff: The above data size changes (reduction or increase) may require the expected size adjustment. See https://codereview.chromium.org/403723003 for a similar change.
>
> CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
>
> BUG=575007
> TEST=Blink layout tests, {webkit,blink_*}_unittests
> TEST=All bots can build successfully
> TEST=net_unittests --gtest_filter="*ilenameUtil*"
> TEST=net_unittests --gtest_filter="*IDN*" (pending bug 336973)
> TEST=components_unittests --gtest_filter={*IDN*, *unyc*}
> TEST=base_unittests --gtest_filter="*Conv*"
> TEST=browser_tests --gtest_filter="*ncoding*"
> TEST=base_unittests --gtest_filter="*essage*"
> TEST=ui_base_unittests --gtest_filter="*ormat*"
> TEST=ui_base_unittests --gtest_filter="L10n*"
>
> Committed: https://crrev.com/c49e2637e2e0e6a29968debcc92cc0fbe208e98d
> Cr-Commit-Position: refs/heads/master@{#382201}

TBR=drott@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=575007

Review URL: https://codereview.chromium.org/1823483002

Cr-Commit-Position: refs/heads/master@{#382216}

1 files changed, 1 insertions, 1 deletions

diff --git a/DEPS b/DEPS
index 64186f2..886cb69 100644
--- a/DEPS
+++ b/DEPS
@@ -131,7 +131,7 @@ deps = {
    Var('chromium_git') + '/external/colorama.git' + '@' + '799604a1041e9b3bc5d2789ecbd7e8db2e18e6b8',
 
   'src/third_party/icu':
-   Var('chromium_git') + '/chromium/deps/icu.git' + '@' + '8a6c927be5132b592ca609ff598c3290ba1dbe19',
+   Var('chromium_git') + '/chromium/deps/icu.git' + '@' + '6d3b55dfa17d9a597c064eeef7ceac18c73184b7',
 
   'src/third_party/hunspell_dictionaries':
    Var('chromium_git') + '/chromium/deps/hunspell_dictionaries.git' + '@' + 'c106afdcec5d3de2622e19f1b3294c47bbd8bd72',