Revert of patch from issue 885453002 at patchset 20001 (http://crrev.com/885453002...

Revert of patch from issue 885453002 at patchset 20001 (crrev.com/885453002#ps20001) (patchset #1 id:1 of https://codereview.chromium.org/881953002/)

Reason for revert:
==32435==ERROR: AddressSanitizer: alloc-dealloc-mismatch (operator new [] vs operator delete) on 0x621000d8cd00

Lots of info here:
http://build.chromium.org/p/client.skia/builders/Test-Ubuntu13.10-GCE-NoGPU-x86_64-Debug-ASAN/builds/1198/steps/dm/logs/stdio

Original issue's description:
> patch from issue 885453002 at patchset 20001 (http://crrev.com/885453002#ps20001)
>
> Make the char cache dynamic in SkGlyphCache
> because it is rarely used.
>
> Landing on behalf of Herb.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/95faa61d63a6f62916f6f7be58c4624da8357e3b

TBR=mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/881023003