Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/ProfileData/Coverage/CoverageMappingReader.h b/linux-x64/clang/include/llvm/ProfileData/Coverage/CoverageMappingReader.h
index 633e515..c88c71a 100644
--- a/linux-x64/clang/include/llvm/ProfileData/Coverage/CoverageMappingReader.h
+++ b/linux-x64/clang/include/llvm/ProfileData/Coverage/CoverageMappingReader.h
@@ -32,7 +32,7 @@
 
 class CoverageMappingReader;
 
-/// \brief Coverage mapping information for a single function.
+/// Coverage mapping information for a single function.
 struct CoverageMappingRecord {
   StringRef FunctionName;
   uint64_t FunctionHash;
@@ -41,7 +41,7 @@
   ArrayRef<CounterMappingRegion> MappingRegions;
 };
 
-/// \brief A file format agnostic iterator over coverage mapping data.
+/// A file format agnostic iterator over coverage mapping data.
 class CoverageMappingIterator
     : public std::iterator<std::input_iterator_tag, CoverageMappingRecord> {
   CoverageMappingReader *Reader;
@@ -101,7 +101,7 @@
   CoverageMappingIterator end() { return CoverageMappingIterator(); }
 };
 
-/// \brief Base class for the raw coverage mapping and filenames data readers.
+/// Base class for the raw coverage mapping and filenames data readers.
 class RawCoverageReader {
 protected:
   StringRef Data;
@@ -114,7 +114,7 @@
   Error readString(StringRef &Result);
 };
 
-/// \brief Reader for the raw coverage filenames.
+/// Reader for the raw coverage filenames.
 class RawCoverageFilenamesReader : public RawCoverageReader {
   std::vector<StringRef> &Filenames;
 
@@ -128,7 +128,7 @@
   Error read();
 };
 
-/// \brief Checks if the given coverage mapping data is exported for
+/// Checks if the given coverage mapping data is exported for
 /// an unused function.
 class RawCoverageMappingDummyChecker : public RawCoverageReader {
 public:
@@ -138,7 +138,7 @@
   Expected<bool> isDummy();
 };
 
-/// \brief Reader for the raw coverage mapping data.
+/// Reader for the raw coverage mapping data.
 class RawCoverageMappingReader : public RawCoverageReader {
   ArrayRef<StringRef> TranslationUnitFilenames;
   std::vector<StringRef> &Filenames;
@@ -169,7 +169,7 @@
                              unsigned InferredFileID, size_t NumFileIDs);
 };
 
-/// \brief Reader for the coverage mapping data that is emitted by the
+/// Reader for the coverage mapping data that is emitted by the
 /// frontend and stored in an object file.
 class BinaryCoverageReader : public CoverageMappingReader {
 public: