Change std::{lower,upper}_bound to llvm::{lower,upper}_bound or llvm::partition_point. NFC

llvm-svn: 365006
diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index d04db59..0d8209c 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -7948,9 +7948,8 @@
   SourceLocation EndLoc = BeginLoc.getLocWithOffset(Length);
 
   DeclIDComp DIDComp(*this, *DInfo.Mod);
-  ArrayRef<serialization::LocalDeclID>::iterator
-    BeginIt = std::lower_bound(DInfo.Decls.begin(), DInfo.Decls.end(),
-                               BeginLoc, DIDComp);
+  ArrayRef<serialization::LocalDeclID>::iterator BeginIt =
+      llvm::lower_bound(DInfo.Decls, BeginLoc, DIDComp);
   if (BeginIt != DInfo.Decls.begin())
     --BeginIt;
 
@@ -7962,9 +7961,8 @@
              ->isTopLevelDeclInObjCContainer())
     --BeginIt;
 
-  ArrayRef<serialization::LocalDeclID>::iterator
-    EndIt = std::upper_bound(DInfo.Decls.begin(), DInfo.Decls.end(),
-                             EndLoc, DIDComp);
+  ArrayRef<serialization::LocalDeclID>::iterator EndIt =
+      llvm::upper_bound(DInfo.Decls, EndLoc, DIDComp);
   if (EndIt != DInfo.Decls.end())
     ++EndIt;