Omit .Get() on calls to DataEquivalent in StyleRareInheritedData.

StyleRareInheritedData contains a few members stored as RefPtr<> or
Persistent<>. To compare these members, we can't use == because that
performs a pointer comparison, so instead we use a helper method called
DataEquivalent that checks both the pointer and the data itself.

For some members, DataEquivalent is being used like this:

  DataEquivalent(foo.Get(), o.foo.Get())

However, DataEquivalent is overloaded for RefPtr and Persistent, so we
can do this instead:

  DataEquivalent(foo, o.foo)

This patch removes .Get() calls on DataEquivalent to take advantage of
the overloads.

BUG=628043

Review-Url: https://codereview.chromium.org/2852873002
Cr-Commit-Position: refs/heads/master@{#468914}
1 file changed