Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/ADT/UniqueVector.h b/linux-x64/clang/include/llvm/ADT/UniqueVector.h
index b17fb23..c86bedd 100644
--- a/linux-x64/clang/include/llvm/ADT/UniqueVector.h
+++ b/linux-x64/clang/include/llvm/ADT/UniqueVector.h
@@ -72,16 +72,16 @@
     return Vector[ID - 1];
   }
 
-  /// \brief Return an iterator to the start of the vector.
+  /// Return an iterator to the start of the vector.
   iterator begin() { return Vector.begin(); }
 
-  /// \brief Return an iterator to the start of the vector.
+  /// Return an iterator to the start of the vector.
   const_iterator begin() const { return Vector.begin(); }
 
-  /// \brief Return an iterator to the end of the vector.
+  /// Return an iterator to the end of the vector.
   iterator end() { return Vector.end(); }
 
-  /// \brief Return an iterator to the end of the vector.
+  /// Return an iterator to the end of the vector.
   const_iterator end() const { return Vector.end(); }
 
   /// size - Returns the number of entries in the vector.