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:

Review URL: https://codereview.chromium.org/881953002

1 files changed, 4 insertions, 1 deletions

diff --git a/src/core/SkGlyphCache.h b/src/core/SkGlyphCache.h
index bb34a7d977..a0d4afbc46 100644
--- a/src/core/SkGlyphCache.h
+++ b/src/core/SkGlyphCache.h
@@ -202,7 +202,10 @@ private:
         SkGlyph*    fGlyph;
     };
     // no reason to use the same kHashCount as fGlyphHash, but we do for now
-    CharGlyphRec    fCharToGlyphHash[kHashCount];
+    // Dynamically allocated when chars are encountered.
+    SkAutoTDelete<CharGlyphRec> fCharToGlyphHash;
+    
+    CharGlyphRec* getCharGlyphRec(uint32_t id);
 
     static inline unsigned ID2HashIndex(uint32_t id) {
         id ^= id >> 16;