Revert "Fix a ton of compiler warnings."

base/process_util_unittest.cc

Index: base/process_util_unittest.cc
diff --git a/base/process_util_unittest.cc b/base/process_util_unittest.cc
index 6f74daf93099b20518557affe194276bed2e3954..b75bdb8e6a9112feb2a09fe85c7c2d4595313e7e 100644
--- a/base/process_util_unittest.cc
+++ b/base/process_util_unittest.cc
@@ -41,7 +41,7 @@ MULTIPROCESS_TEST_MAIN(SimpleChildProcess) {
 TEST_F(ProcessUtilTest, SpawnChild) {
   ProcessHandle handle = this->SpawnChild(L"SimpleChildProcess");
 
-  ASSERT_NE(0, handle);
+  ASSERT_NE(static_cast<ProcessHandle>(NULL), handle);
   EXPECT_TRUE(WaitForSingleProcess(handle, 5000));
   base::CloseProcessHandle(handle);
 }
@@ -62,7 +62,7 @@ MULTIPROCESS_TEST_MAIN(SlowChildProcess) {
 TEST_F(ProcessUtilTest, KillSlowChild) {
   remove("SlowChildProcess.die");
   ProcessHandle handle = this->SpawnChild(L"SlowChildProcess");
-  ASSERT_NE(0, handle);
+  ASSERT_NE(static_cast<ProcessHandle>(NULL), handle);
   FILE *fp = fopen("SlowChildProcess.die", "w");
   fclose(fp);
   EXPECT_TRUE(base::WaitForSingleProcess(handle, 5000));