RFR: 8264732: Clean up LinkResolver::vtable_index_of_interface_method() [v3]

[Vladimir Ivanov]

> Turn `resolved_method` parameter into raw `Method*`.
> 
> Testing:
> * [x] hs-tier1 - hs-tier6

Vladimir Ivanov has updated the pull request incrementally with one additional commit since the last revision:

  Move itable_index_of_interface_method() implementation to InstanceKlass

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3346/files
  - new: https://git.openjdk.java.net/jdk/pull/3346/files/a2bf4794..9dfc9437

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3346&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3346&range=01-02

  Stats: 55 lines in 5 files changed: 28 ins; 21 del; 6 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3346.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3346/head:pull/3346

PR: https://git.openjdk.java.net/jdk/pull/3346