Index: lib/StaticAnalyzer/Checkers/MallocOverflowSecurityChecker.cpp
===================================================================
--- lib/StaticAnalyzer/Checkers/MallocOverflowSecurityChecker.cpp
+++ lib/StaticAnalyzer/Checkers/MallocOverflowSecurityChecker.cpp
@@ -28,7 +28,6 @@
 
 using namespace clang;
 using namespace ento;
-using llvm::APInt;
 using llvm::APSInt;
 
 namespace {
Index: lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
===================================================================
--- lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
+++ lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
@@ -50,7 +50,6 @@
 
 using namespace clang;
 using namespace ento;
-using llvm::SmallPtrSet;
 
 #define DEBUG_TYPE "AnalysisConsumer"
 
Index: unittests/AST/ASTContextParentMapTest.cpp
===================================================================
--- unittests/AST/ASTContextParentMapTest.cpp
+++ unittests/AST/ASTContextParentMapTest.cpp
@@ -22,8 +22,6 @@
 namespace ast_matchers {
 
 using clang::tooling::newFrontendActionFactory;
-using clang::tooling::runToolOnCodeWithArgs;
-using clang::tooling::FrontendActionFactory;
 
 TEST(GetParents, ReturnsParentForDecl) {
   MatchVerifier<Decl> Verifier;
Index: unittests/AST/ASTImporterTest.cpp
===================================================================
--- unittests/AST/ASTImporterTest.cpp
+++ unittests/AST/ASTImporterTest.cpp
@@ -23,8 +23,6 @@
 namespace ast_matchers {
 
 using clang::tooling::newFrontendActionFactory;
-using clang::tooling::runToolOnCodeWithArgs;
-using clang::tooling::FrontendActionFactory;
 
 typedef std::vector<std::string> StringVector;
 
Index: unittests/ASTMatchers/Dynamic/VariantValueTest.cpp
===================================================================
--- unittests/ASTMatchers/Dynamic/VariantValueTest.cpp
+++ unittests/ASTMatchers/Dynamic/VariantValueTest.cpp
@@ -16,9 +16,6 @@
 namespace dynamic {
 namespace {
 
-using ast_matchers::internal::DynTypedMatcher;
-using ast_matchers::internal::Matcher;
-
 TEST(VariantValueTest, Unsigned) {
   const unsigned kUnsigned = 17;
   VariantValue Value = kUnsigned;