Roll src/third_party/skia 553610d7928d..cb7149e05864 (6 commits) (#7491)

https://skia.googlesource.com/skia.git/%2Blog/553610d7928d..cb7149e05864

git log 553610d7928ddda999a88122423b38350b374e67..cb7149e0586409f25fa76f3a8f9fcd7ecbb8029d --date=short --no-merges --format=%ad %ae %s
2019-01-15 jvanverth@google.com Temporarily disable etc1 GM on Google3
2019-01-15 michaelludwig@google.com Revert "Force flush in clear benchmarks"
2019-01-15 jvanverth@google.com Fix etc1 GM in preReleaseGpuContext mode.
2019-01-15 borenet@google.com [infra] Update upstream CIPD dependencies, roll recipes
2019-01-15 jvanverth@google.com Restore ETC1 compressed texture support.
2019-01-15 mtklein@google.com remove superfluous skia_vulkan_sdk

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (halcanary@google.com), and stop
the roller if necessary.

DEPS

@@ -23,7 +23,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': '553610d7928ddda999a88122423b38350b374e67',
+  'skia_revision': 'cb7149e0586409f25fa76f3a8f9fcd7ecbb8029d',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

sky/packages/sky_engine/LICENSE

@@ -2808,6 +2808,7 @@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 --------------------------------------------------------------------------------
 boringssl
+etc1
 observatory_pub_packages
 skia
 txt