Roll src/third_party/skia bd3d8d39b3e7..215ff3325230 (4 commits) (#9648)

https://skia.googlesource.com/skia.git
/%2Blog/bd3d8d39b3e7..215ff3325230

git log bd3d8d39b3e73398ab37e4a58bd9de6dd462008c..215ff3325230557a35dce26174b3294b570afbf9 --date=short --no-merges --format=%ad %ae %s
2019-07-02 csmartdalton@google.com Don't attempt mixed samples on "borrowed" render targets
2019-07-02 egdaniel@google.com Add ColorTypeInfo struct to FormatInfo in GrGLCaps.
2019-07-01 brianosman@google.com Reland "Test MSAA on Gen9 Intel GPUs"
2019-07-01 thestig@chromium.org Make SkFloatToDecimal() param name match declaration.

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.

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': 'bd3d8d39b3e73398ab37e4a58bd9de6dd462008c',
+  'skia_revision': '215ff3325230557a35dce26174b3294b570afbf9',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 5cc2ffd86f5d9e77ae2d2ea1729886d8
+Signature: fc7d552a83e5eefd8a5fb0ddf8f6bcba
 
 UNUSED LICENSES: