Replace NULL with nullptr in all C++ files.

webrtc/modules/audio_processing/transient/file_utils_unittest.cc

Index: webrtc/modules/audio_processing/transient/file_utils_unittest.cc
diff --git a/webrtc/modules/audio_processing/transient/file_utils_unittest.cc b/webrtc/modules/audio_processing/transient/file_utils_unittest.cc
index 2909ac397a5615606d982bc373217fa4ba64bb06..b31bf1cb06a61de363c530c66d79aec98d565057 100644
--- a/webrtc/modules/audio_processing/transient/file_utils_unittest.cc
+++ b/webrtc/modules/audio_processing/transient/file_utils_unittest.cc
@@ -494,10 +494,10 @@ TEST_F(TransientFileUtilsTest, MAYBE_ExpectedErrorReturnValues) {
   std::unique_ptr<double[]> double_buffer(new double[1]);
   std::unique_ptr<FileWrapper> file(FileWrapper::Create());
 
-  EXPECT_EQ(-1, ConvertByteArrayToDouble(NULL, &value));
-  EXPECT_EQ(-1, ConvertByteArrayToDouble(kPiBytes, NULL));
+  EXPECT_EQ(-1, ConvertByteArrayToDouble(nullptr, &value));
+  EXPECT_EQ(-1, ConvertByteArrayToDouble(kPiBytes, nullptr));
 
-  EXPECT_EQ(-1, ConvertDoubleToByteArray(kPi, NULL));
+  EXPECT_EQ(-1, ConvertDoubleToByteArray(kPi, nullptr));
 
   // Tests with file not opened.
   EXPECT_EQ(0u, ReadInt16BufferFromFile(file.get(), 1, int16_buffer.get()));
@@ -512,26 +512,27 @@ TEST_F(TransientFileUtilsTest, MAYBE_ExpectedErrorReturnValues) {
   ASSERT_TRUE(file->is_open()) << "File could not be opened:\n"
                                << kTestFileName.c_str();
 
-  EXPECT_EQ(0u, ReadInt16BufferFromFile(NULL, 1, int16_buffer.get()));
-  EXPECT_EQ(0u, ReadInt16BufferFromFile(file.get(), 1, NULL));
+  EXPECT_EQ(0u, ReadInt16BufferFromFile(nullptr, 1, int16_buffer.get()));
+  EXPECT_EQ(0u, ReadInt16BufferFromFile(file.get(), 1, nullptr));
   EXPECT_EQ(0u, ReadInt16BufferFromFile(file.get(), 0, int16_buffer.get()));
 
-  EXPECT_EQ(0u, ReadInt16FromFileToDoubleBuffer(NULL, 1, double_buffer.get()));
-  EXPECT_EQ(0u, ReadInt16FromFileToDoubleBuffer(file.get(), 1, NULL));
+  EXPECT_EQ(0u,
+            ReadInt16FromFileToDoubleBuffer(nullptr, 1, double_buffer.get()));
+  EXPECT_EQ(0u, ReadInt16FromFileToDoubleBuffer(file.get(), 1, nullptr));
   EXPECT_EQ(0u, ReadInt16FromFileToDoubleBuffer(file.get(),
                                                 0,
                                                 double_buffer.get()));
 
-  EXPECT_EQ(0u, ReadDoubleBufferFromFile(NULL, 1, double_buffer.get()));
-  EXPECT_EQ(0u, ReadDoubleBufferFromFile(file.get(), 1, NULL));
+  EXPECT_EQ(0u, ReadDoubleBufferFromFile(nullptr, 1, double_buffer.get()));
+  EXPECT_EQ(0u, ReadDoubleBufferFromFile(file.get(), 1, nullptr));
   EXPECT_EQ(0u, ReadDoubleBufferFromFile(file.get(), 0, double_buffer.get()));
 
-  EXPECT_EQ(0u, WriteInt16BufferToFile(NULL, 1, int16_buffer.get()));
-  EXPECT_EQ(0u, WriteInt16BufferToFile(file.get(), 1, NULL));
+  EXPECT_EQ(0u, WriteInt16BufferToFile(nullptr, 1, int16_buffer.get()));
+  EXPECT_EQ(0u, WriteInt16BufferToFile(file.get(), 1, nullptr));
   EXPECT_EQ(0u, WriteInt16BufferToFile(file.get(), 0, int16_buffer.get()));
 
-  EXPECT_EQ(0u, WriteDoubleBufferToFile(NULL, 1, double_buffer.get()));
-  EXPECT_EQ(0u, WriteDoubleBufferToFile(file.get(), 1, NULL));
+  EXPECT_EQ(0u, WriteDoubleBufferToFile(nullptr, 1, double_buffer.get()));
+  EXPECT_EQ(0u, WriteDoubleBufferToFile(file.get(), 1, nullptr));
   EXPECT_EQ(0u, WriteDoubleBufferToFile(file.get(), 0, double_buffer.get()));
 }