Mojo: NULL -> nullptr in mojo/system and mojo/embedder.

mojo/system/memory_unittest.cc

Index: mojo/system/memory_unittest.cc
diff --git a/mojo/system/memory_unittest.cc b/mojo/system/memory_unittest.cc
index 5cfcb32ff7405c39d7c940840c24148fad81dcfd..37acaf7c3b39c7d914d4a0606361f1ed30fc718e 100644
--- a/mojo/system/memory_unittest.cc
+++ b/mojo/system/memory_unittest.cc
@@ -176,7 +176,7 @@ TEST(MemoryTest, InvalidDeath) {
 
   // Null:
   {
-    UserPointer<char> ptr(NULL);
+    UserPointer<char> ptr(nullptr);
     char array[5] = {};
     EXPECT_DEATH_IF_SUPPORTED(ptr.Check(), kMemoryCheckFailedRegex);
     EXPECT_DEATH_IF_SUPPORTED(ptr.Get(), kMemoryCheckFailedRegex);
@@ -186,7 +186,7 @@ TEST(MemoryTest, InvalidDeath) {
     EXPECT_DEATH_IF_SUPPORTED(ptr.PutArray(array, 5), kMemoryCheckFailedRegex);
   }
   {
-    UserPointer<int32_t> ptr(NULL);
+    UserPointer<int32_t> ptr(nullptr);
     int32_t array[5] = {};
     EXPECT_DEATH_IF_SUPPORTED(ptr.Check(), kMemoryCheckFailedRegex);
     EXPECT_DEATH_IF_SUPPORTED(ptr.Get(), kMemoryCheckFailedRegex);
@@ -196,7 +196,7 @@ TEST(MemoryTest, InvalidDeath) {
     EXPECT_DEATH_IF_SUPPORTED(ptr.PutArray(array, 5), kMemoryCheckFailedRegex);
   }
   {
-    UserPointer<int64_t> ptr(NULL);
+    UserPointer<int64_t> ptr(nullptr);
     int64_t array[5] = {};
     EXPECT_DEATH_IF_SUPPORTED(ptr.Check(), kMemoryCheckFailedRegex);
     EXPECT_DEATH_IF_SUPPORTED(ptr.Get(), kMemoryCheckFailedRegex);
@@ -207,7 +207,7 @@ TEST(MemoryTest, InvalidDeath) {
   }
   // Also check a const pointer:
   {
-    UserPointer<const int32_t> ptr(NULL);
+    UserPointer<const int32_t> ptr(nullptr);
     int32_t array[5] = {};
     EXPECT_DEATH_IF_SUPPORTED(ptr.Check(), kMemoryCheckFailedRegex);
     EXPECT_DEATH_IF_SUPPORTED(ptr.Get(), kMemoryCheckFailedRegex);