Revert "Clean up SkString reference counting a bit."

This reverts commit a910c847e9d04e183e9e610902cbd363c8488196.

Reason for revert: Compilation failure on Ubuntu14 bots

../../../../../work/skia/src/core/SkString.cpp:200:55: error: could not convert ‘{0, {0}, 0}’ from ‘<brace-enclosed initializer list>’ to ‘const SkString::Rec’
 const SkString::Rec SkString::gEmptyRec = { 0, {0}, 0 };

Original change's description:
> Clean up SkString reference counting a bit.
> 
> BUG=skia:7107
> 
> Change-Id: I47072bf31b902c79dbb850179ff6d35940de3e63
> Reviewed-on: https://skia-review.googlesource.com/54720
> Reviewed-by: Ben Wagner <bungeman@google.com>
> Commit-Queue: Ben Wagner <bungeman@google.com>

TBR=mtklein@google.com,bungeman@google.com,reed@google.com

Change-Id: I6ec327511e8e1c1fd7e4c1bd5839c0547d4ab609
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7107
Reviewed-on: https://skia-review.googlesource.com/55640
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2 files changed