clang/win: Let some chromium_code targets build with -Wextra.

sandbox/win/src/threadpool_unittest.cc

Index: sandbox/win/src/threadpool_unittest.cc
diff --git a/sandbox/win/src/threadpool_unittest.cc b/sandbox/win/src/threadpool_unittest.cc
index f439810851fe27ef7ffa23bb955b5ffc2da941e2..4f3b0df5b1a5af1cc46be637620532fd7cde38ed 100644
--- a/sandbox/win/src/threadpool_unittest.cc
+++ b/sandbox/win/src/threadpool_unittest.cc
@@ -19,22 +19,22 @@ namespace sandbox {
 TEST(IPCTest, ThreadPoolRegisterTest1) {
   Win2kThreadPool thread_pool;
 
-  EXPECT_EQ(0, thread_pool.OutstandingWaits());
+  EXPECT_EQ(0u, thread_pool.OutstandingWaits());
 
   HANDLE event1 = ::CreateEventW(NULL, FALSE, FALSE, NULL);
   HANDLE event2 = ::CreateEventW(NULL, FALSE, FALSE, NULL);
 
   uint32 context = 0;
   EXPECT_FALSE(thread_pool.RegisterWait(0, event1, EmptyCallBack, &context));
-  EXPECT_EQ(0, thread_pool.OutstandingWaits());
+  EXPECT_EQ(0u, thread_pool.OutstandingWaits());
 
   EXPECT_TRUE(thread_pool.RegisterWait(this, event1, EmptyCallBack, &context));
-  EXPECT_EQ(1, thread_pool.OutstandingWaits());
+  EXPECT_EQ(1u, thread_pool.OutstandingWaits());
   EXPECT_TRUE(thread_pool.RegisterWait(this, event2, EmptyCallBack, &context));
-  EXPECT_EQ(2, thread_pool.OutstandingWaits());
+  EXPECT_EQ(2u, thread_pool.OutstandingWaits());
 
   EXPECT_TRUE(thread_pool.UnRegisterWaits(this));
-  EXPECT_EQ(0, thread_pool.OutstandingWaits());
+  EXPECT_EQ(0u, thread_pool.OutstandingWaits());
 
   EXPECT_EQ(TRUE, ::CloseHandle(event1));
   EXPECT_EQ(TRUE, ::CloseHandle(event2));
@@ -52,17 +52,17 @@ TEST(IPCTest, ThreadPoolRegisterTest2) {
   uint32 c2 = 0;
 
   EXPECT_TRUE(thread_pool.RegisterWait(&c1, event1, EmptyCallBack, &context));
-  EXPECT_EQ(1, thread_pool.OutstandingWaits());
+  EXPECT_EQ(1u, thread_pool.OutstandingWaits());
   EXPECT_TRUE(thread_pool.RegisterWait(&c2, event2, EmptyCallBack, &context));
-  EXPECT_EQ(2, thread_pool.OutstandingWaits());
+  EXPECT_EQ(2u, thread_pool.OutstandingWaits());
 
   EXPECT_TRUE(thread_pool.UnRegisterWaits(&c2));
-  EXPECT_EQ(1, thread_pool.OutstandingWaits());
+  EXPECT_EQ(1u, thread_pool.OutstandingWaits());
   EXPECT_TRUE(thread_pool.UnRegisterWaits(&c2));
-  EXPECT_EQ(1, thread_pool.OutstandingWaits());
+  EXPECT_EQ(1u, thread_pool.OutstandingWaits());
 
   EXPECT_TRUE(thread_pool.UnRegisterWaits(&c1));
-  EXPECT_EQ(0, thread_pool.OutstandingWaits());
+  EXPECT_EQ(0u, thread_pool.OutstandingWaits());
 
   EXPECT_EQ(TRUE, ::CloseHandle(event1));
   EXPECT_EQ(TRUE, ::CloseHandle(event2));
@@ -83,9 +83,10 @@ TEST(IPCTest, ThreadPoolSignalAndWaitTest) {
   EXPECT_EQ(WAIT_OBJECT_0, ::SignalObjectAndWait(event1, event2, 5000, FALSE));
 
   EXPECT_TRUE(thread_pool.UnRegisterWaits(this));
-  EXPECT_EQ(0, thread_pool.OutstandingWaits());
+  EXPECT_EQ(0u, thread_pool.OutstandingWaits());
 
-  EXPECT_EQ(WAIT_TIMEOUT, ::SignalObjectAndWait(event1, event2, 1000, FALSE));
+  EXPECT_EQ(static_cast<DWORD>(WAIT_TIMEOUT),
+            ::SignalObjectAndWait(event1, event2, 1000, FALSE));
 
   EXPECT_EQ(TRUE, ::CloseHandle(event1));
   EXPECT_EQ(TRUE, ::CloseHandle(event2));