simplify string processing code

Author: planetchili

PresentMon/OutputThread.cpp

@@ -4,11 +4,14 @@
 
 #include "PresentMon.hpp"
 #include "../IntelPresentMon/CommonUtilities/Math.h"
+#include "../IntelPresentMon/CommonUtilities/str/String.h"
 
 #include <algorithm>
 #include <shlwapi.h>
 #include <thread>
 
+using namespace pmon;
+
 static std::thread gThread;
 static bool gQuit = false;
 
@@ -840,13 +843,8 @@ static void PruneOldSwapChainData(
         auto processInfo = &pair.second;
 
         // Check if this is DWM process
-        bool isDwmProcess = false;
-        std::wstring processName = processInfo->mModuleName;
-        std::transform(processName.begin(), processName.end(), processName.begin(),
-            [](wchar_t c) { return (wchar_t) ::towlower(c); });
-        if (processName.find(L"dwm.exe") != std::wstring::npos) {
-            isDwmProcess = true;
-        }
+        const bool isDwmProcess =
+            util::str::ToLower(processInfo->mModuleName).contains(L"dwm.exe");
 
         for (auto ii = processInfo->mSwapChain.begin(), ie = processInfo->mSwapChain.end(); ii != ie; ) {
             auto swapChainAddress = ii->first;