Remove "void GetFunctionLocation()"

This CL removes "void GetFunctionLocation(...)".
Only InspectorDOMDebuggerAgent::BuildObjectForEventListener() used this
method to set some values and it was not useful.
"std::unique_ptr<SourceLocation> GetFunctionLocation(...)" will be
moved into another class in following CL as commented, so this CL
addresses void one first.

Bug: 872138
Change-Id: I6cbb771a11c50d70654eac2918d5246b6838adc4
Reviewed-on: https://chromium-review.googlesource.com/1219427
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Commit-Queue: Yuki Yamada <yukiy@google.com>
Cr-Commit-Position: refs/heads/master@{#590556}
3 files changed