Roll Fuchsia SDK from ef15b6a1f907 to f7d3722a8836

Bring MockFontProvider up to date by adding a missing method.

The AutoRoll server is located here: https://autoroll.skia.org/r/fuchsia-sdk-chromium-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, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=luci.chromium.try:fuchsia_arm64_cast_audio;luci.chromium.try:fuchsia_x64_cast_audio
TBR=cr-fuchsia+bot@chromium.org,sergeyu@chromium.org

Change-Id: I9caf4eb4557506aec41e7be289b322379aceef45
Reviewed-on: https://chromium-review.googlesource.com/c/1297229
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602044}

build/fuchsia/linux.sdk.sha1

-ef15b6a1f907f8ccf08c70c6515d20a7bb2000d8
\ No newline at end of file
+f7d3722a883610389d41d296287be3d4b7f58ef1
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-d2803d5616b5147eb9309881198f7f562be07d40
\ No newline at end of file
+7a6faff788745e5c85c2268737293abaee939573
\ No newline at end of file

skia/ext/fontmgr_fuchsia_unittest.cc

@@ -71,6 +71,8 @@ class MockFontProvider : public fuchsia::fonts::Provider {
     response->buffer.size = font_buffer->size;
     callback(std::move(response));
   }
+  void GetFamilyInfo(fidl::StringPtr family,
+                     GetFamilyInfoCallback callback) override {}
 
  private:
   fuchsia::mem::Buffer roboto_;