[PATCH] Simplify Symbolizer::SymbolizePC() interface.

[Sergey Matveev]

================
Comment at: lib/sanitizer_common/sanitizer_symbolizer_libbacktrace.cc:86
@@ -85,2 +85,3 @@
 
 struct SymbolizeCodeData {
+  SymbolizedFrame *res;
----------------
We have SymbolizeCode(), SymbolizeData() and struct SymbolizeCodeData. Confusing. Besides, "Data" doesn't really tell you anything. This should be renamed to something like SymbolizeCodeResult.

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Comment at: lib/sanitizer_common/sanitizer_symbolizer_libbacktrace.cc:87
@@ -86,4 +86,3 @@
 struct SymbolizeCodeData {
-  AddressInfo *frames;
-  uptr n_frames;
-  uptr max_frames;
+  SymbolizedFrame *res;
+  SymbolizedFrame *last;
----------------
I'm not happy with this name. Maybe "result" or "first"? I'd prefer the latter.

http://reviews.llvm.org/D6394