skia update for compose shader

Update the Skia DEPS revision
to a version that can handle
PDFium's use of SkComposeShader.

R=dsinclair@chromium.org

Review-Url: https://codereview.chromium.org/2249103002
diff --git a/DEPS b/DEPS
index 340ddd8..73682c3 100644
--- a/DEPS
+++ b/DEPS
@@ -15,7 +15,7 @@
   'gtest_revision': '8245545b6dc9c4703e6496d1efd19e975ad2b038',
   'icu_revision': 'a5f86adbb0a58d04c035a5d1228747b1823cd485',
   'pdfium_tests_revision': '4119f8ed4e89156e646c3fd235b61718da5e9b45',
-  'skia_revision': '96206a96f357cd30b60d1b1aa98e4e3a8f9b97f1',
+  'skia_revision': '36c38cbb29744e0b5390a38367e47c0c74287c2d',
   'tools_memory_revision': '427f10475e1a8d72424c29d00bf689122b738e5d',
   'trace_event_revision': '54b8455be9505c2cb0cf5c26bb86739c236471aa',
   'v8_revision': '75f10f91b1b0b392d2a29a7a480bf079db6f43fa',