drop more llvm:: prefixes on OwningPtr<>

More cleanup after r149798.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150379 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/driver/cc1_main.cpp b/tools/driver/cc1_main.cpp
index ad3f350..e491d61 100644
--- a/tools/driver/cc1_main.cpp
+++ b/tools/driver/cc1_main.cpp
@@ -117,7 +117,7 @@
 
 int cc1_main(const char **ArgBegin, const char **ArgEnd,
              const char *Argv0, void *MainAddr) {
-  llvm::OwningPtr<CompilerInstance> Clang(new CompilerInstance());
+  OwningPtr<CompilerInstance> Clang(new CompilerInstance());
   llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
 
   // Run clang -cc1 test.
diff --git a/tools/driver/cc1as_main.cpp b/tools/driver/cc1as_main.cpp
index fc8c5dc..cc4400a 100644
--- a/tools/driver/cc1as_main.cpp
+++ b/tools/driver/cc1as_main.cpp
@@ -411,7 +411,7 @@
 
   // Honor -help.
   if (Asm.ShowHelp) {
-    llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1AsOptTable());
+    OwningPtr<driver::OptTable> Opts(driver::createCC1AsOptTable());
     Opts->PrintHelp(llvm::outs(), "clang -cc1as", "Clang Integrated Assembler");
     return 0;
   }
diff --git a/tools/driver/driver.cpp b/tools/driver/driver.cpp
index e399790..784b51d 100644
--- a/tools/driver/driver.cpp
+++ b/tools/driver/driver.cpp
@@ -186,7 +186,7 @@
                               SmallVectorImpl<const char*> &ArgVector,
                               std::set<std::string> &SavedStrings) {
   const char *FName = Arg + 1;
-  llvm::OwningPtr<llvm::MemoryBuffer> MemBuf;
+  OwningPtr<llvm::MemoryBuffer> MemBuf;
   if (llvm::MemoryBuffer::getFile(FName, MemBuf)) {
     ArgVector.push_back(SaveStringInSet(SavedStrings, Arg));
     return;
@@ -448,7 +448,7 @@
     argv.insert(&argv[1], ExtraArgs.begin(), ExtraArgs.end());
   }
 
-  llvm::OwningPtr<Compilation> C(TheDriver.BuildCompilation(argv));
+  OwningPtr<Compilation> C(TheDriver.BuildCompilation(argv));
   int Res = 0;
   const Command *FailingCommand = 0;
   if (C.get())