Replace NULL with nullptr in all C++ files.

webrtc/modules/video_capture/windows/video_capture_ds.cc

Index: webrtc/modules/video_capture/windows/video_capture_ds.cc
diff --git a/webrtc/modules/video_capture/windows/video_capture_ds.cc b/webrtc/modules/video_capture/windows/video_capture_ds.cc
index a75ef5bc49538916a5fd83af2100f247087da54f..a1ce958a724f061ee1dde46614669a77ac0f8fb9 100644
--- a/webrtc/modules/video_capture/windows/video_capture_ds.cc
+++ b/webrtc/modules/video_capture/windows/video_capture_ds.cc
@@ -23,12 +23,15 @@ namespace webrtc
 namespace videocapturemodule
 {
 VideoCaptureDS::VideoCaptureDS()
-    : _captureFilter(NULL),
-      _graphBuilder(NULL), _mediaControl(NULL), _sinkFilter(NULL),
-      _inputSendPin(NULL), _outputCapturePin(NULL), _dvFilter(NULL),
-      _inputDvPin(NULL), _outputDvPin(NULL)
-{
-}
+    : _captureFilter(nullptr),
+      _graphBuilder(nullptr),
+      _mediaControl(nullptr),
+      _sinkFilter(nullptr),
+      _inputSendPin(nullptr),
+      _outputCapturePin(nullptr),
+      _dvFilter(nullptr),
+      _inputDvPin(nullptr),
+      _outputDvPin(nullptr) {}
 
 VideoCaptureDS::~VideoCaptureDS()
 {
@@ -83,9 +86,9 @@ int32_t VideoCaptureDS::Init(const char* deviceUniqueIdUTF8)
     }
 
     // Get the interface for DirectShow's GraphBuilder
-    HRESULT hr = CoCreateInstance(CLSID_FilterGraph, NULL,
-                                  CLSCTX_INPROC_SERVER, IID_IGraphBuilder,
-                                  (void **) &_graphBuilder);
+    HRESULT hr =
+        CoCreateInstance(CLSID_FilterGraph, nullptr, CLSCTX_INPROC_SERVER,
+                         IID_IGraphBuilder, (void**)&_graphBuilder);
     if (FAILED(hr))
     {
         WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
@@ -112,8 +115,7 @@ int32_t VideoCaptureDS::Init(const char* deviceUniqueIdUTF8)
     _outputCapturePin = GetOutputPin(_captureFilter, PIN_CATEGORY_CAPTURE);
 
     // Create the sink filte used for receiving Captured frames.
-    _sinkFilter = new CaptureSinkFilter(SINK_FILTER_NAME, NULL, &hr,
-                                        *this);
+    _sinkFilter = new CaptureSinkFilter(SINK_FILTER_NAME, nullptr, &hr, *this);
     if (hr != S_OK)
     {
         WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
@@ -244,8 +246,8 @@ int32_t VideoCaptureDS::SetCameraOutput(
         return -1;
     }
 
-    IAMStreamConfig* streamConfig = NULL;
-    AM_MEDIA_TYPE *pmt = NULL;
+    IAMStreamConfig* streamConfig = nullptr;
+    AM_MEDIA_TYPE* pmt = nullptr;
     VIDEO_STREAM_CONFIG_CAPS caps;
 
     HRESULT hr = _outputCapturePin->QueryInterface(IID_IAMStreamConfig,
@@ -314,8 +316,8 @@ int32_t VideoCaptureDS::SetCameraOutput(
     }
     else
     {
-        hr = _graphBuilder->ConnectDirect(_outputCapturePin, _inputSendPin,
-                                          NULL);
+      hr = _graphBuilder->ConnectDirect(_outputCapturePin, _inputSendPin,
+                                        nullptr);
     }
     if (hr != S_OK)
     {
@@ -353,13 +355,12 @@ HRESULT VideoCaptureDS::ConnectDVCamera()
 
     if (!_dvFilter)
     {
-        hr = CoCreateInstance(CLSID_DVVideoCodec, NULL, CLSCTX_INPROC,
-                              IID_IBaseFilter, (void **) &_dvFilter);
-        if (hr != S_OK)
-        {
-            WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
-                         "Failed to create the dv decoder: %x", hr);
-            return hr;
+      hr = CoCreateInstance(CLSID_DVVideoCodec, nullptr, CLSCTX_INPROC,
+                            IID_IBaseFilter, (void**)&_dvFilter);
+      if (hr != S_OK) {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
+                     "Failed to create the dv decoder: %x", hr);
+        return hr;
         }
         hr = _graphBuilder->AddFilter(_dvFilter, L"VideoDecoderDV");
         if (hr != S_OK)
@@ -369,21 +370,19 @@ HRESULT VideoCaptureDS::ConnectDVCamera()
             return hr;
         }
         _inputDvPin = GetInputPin(_dvFilter);
-        if (_inputDvPin == NULL)
-        {
-            WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
-                         "Failed to get input pin from DV decoder");
-            return -1;
+        if (_inputDvPin == nullptr) {
+          WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
+                       "Failed to get input pin from DV decoder");
+          return -1;
         }
         _outputDvPin = GetOutputPin(_dvFilter, GUID_NULL);
-        if (_outputDvPin == NULL)
-        {
-            WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
-                         "Failed to get output pin from DV decoder");
-            return -1;
+        if (_outputDvPin == nullptr) {
+          WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
+                       "Failed to get output pin from DV decoder");
+          return -1;
         }
     }
-    hr = _graphBuilder->ConnectDirect(_outputCapturePin, _inputDvPin, NULL);
+    hr = _graphBuilder->ConnectDirect(_outputCapturePin, _inputDvPin, nullptr);
     if (hr != S_OK)
     {
         WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
@@ -392,7 +391,7 @@ HRESULT VideoCaptureDS::ConnectDVCamera()
         return hr;
     }
 
-    hr = _graphBuilder->ConnectDirect(_outputDvPin, _inputSendPin, NULL);
+    hr = _graphBuilder->ConnectDirect(_outputDvPin, _inputSendPin, nullptr);
     if (hr != S_OK)
     {
         if (hr == HRESULT_FROM_WIN32(ERROR_TOO_MANY_OPEN_FILES))