[Nearby] Upprev NearbyConnections to 4e3f343b7a1b9faee0cb71dc3b2c0ecf13c7f707

Includes tweaks to ClientProxy subclasses and the tests that
use them, because ClientProxy::OnBandwidthChanged() signature
changed.

Includes tweaks to BleMedium implementation to account
for addition of Fast Advertisement feature, but does not
correctly implement their expectations -- that will be
done in a subsequent CL.

Change-Id: I71fb3f8314abc3439350096243f544cc63e79c02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2410652
Commit-Queue: Ryan Hansberry <[email protected]>
Reviewed-by: Alex Gough <[email protected]>
Reviewed-by: James Vecore <[email protected]>
Cr-Commit-Position: refs/heads/master@{#807648}
diff --git a/DEPS b/DEPS
index fa5966b..da1e344e 100644
--- a/DEPS
+++ b/DEPS
@@ -346,7 +346,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling nearby
   # and whatever else without interference from each other.
-  'nearby_revision': 'abc1cbf2673a38678eb7033291049590762526d7',
+  'nearby_revision': '4e3f343b7a1b9faee0cb71dc3b2c0ecf13c7f707',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling securemessage
   # and whatever else without interference from each other.