Use sk_sp-based text blob APIs

third_party/WebKit/Source/platform/text/TextRun.h

Index: third_party/WebKit/Source/platform/text/TextRun.h
diff --git a/third_party/WebKit/Source/platform/text/TextRun.h b/third_party/WebKit/Source/platform/text/TextRun.h
index 4c30b34712f8bddc1ad6b1df9aac6505d277b31b..45b32172eb87656af8ea5466dcd3456e58d41e0e 100644
--- a/third_party/WebKit/Source/platform/text/TextRun.h
+++ b/third_party/WebKit/Source/platform/text/TextRun.h
@@ -250,7 +250,7 @@ public:
     unsigned from;
     unsigned to;
     FloatRect bounds;
-    sk_sp<const SkTextBlob>* cachedTextBlob;
+    sk_sp<SkTextBlob>* cachedTextBlob;

[reed1, 2016/09/12 16:50:54]

Is this really tri-state w/ meaning?

- null ptr
- ptr to null textblob
- ptr to textblob
?

[f(malita), 2016/09/12 17:18:18]

It's an out-param:
the caller cannot/will not cache this blob
the result blob is uncacheable
a cacheable/cached blob


I suspect this could be refactored to always return a cacheable blob and then
let the caller drop it on the floor if needed, maybe we can look at that
separately.

 };
 
 } // namespace blink