Roll src/third_party/skia 9fb7fa537d93..f2c52efce52b (1 commits) (flutter#9644)

https://skia.googlesource.com/skia.git
/%2Blog/9fb7fa537d93..f2c52efce52b

git log 9fb7fa537d938618991922bfffa627e442db67f0..f2c52efce52b2c395be877d25fe0f4999a35754a --date=short --no-merges --format=%ad %ae %s
2019-07-01 bsalomon@google.com Update valgrind suppression

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 (jvanverth@google.com), and stop
the roller if necessary.

Author: skia-flutter-autoroll

DEPS

@@ -26,7 +26,7 @@ vars = {
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': '9fb7fa537d938618991922bfffa627e442db67f0',
+  'skia_revision': 'f2c52efce52b2c395be877d25fe0f4999a35754a',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the