Add installer_util_unittests to the GN windows build

chrome/installer/util/logging_installer_unittest.cc

Index: chrome/installer/util/logging_installer_unittest.cc
diff --git a/chrome/installer/util/logging_installer_unittest.cc b/chrome/installer/util/logging_installer_unittest.cc
index 910f35d1c1bd45819f5d1300d5ff1527c22cc54f..06b959a8b9c329e01fdb5b53a40de107ffa01b5c 100644
--- a/chrome/installer/util/logging_installer_unittest.cc
+++ b/chrome/installer/util/logging_installer_unittest.cc
@@ -20,7 +20,8 @@ TEST(LoggingInstallerTest, TestTruncate) {
 
   base::FilePath temp_file = temp_dir.path().Append(L"temp");
   EXPECT_EQ(test_data.size(),
-            base::WriteFile(temp_file, &test_data[0], test_data.size()));
+            base::WriteFile(temp_file, &test_data[0],
+                            static_cast<int>(test_data.size())));
   ASSERT_TRUE(base::PathExists(temp_file));
 
   int64 file_size = 0;
@@ -45,7 +46,8 @@ TEST(LoggingInstallerTest, TestTruncationNotNeeded) {
 
   base::FilePath temp_file = temp_dir.path().Append(L"temp");
   EXPECT_EQ(test_data.size(),
-            base::WriteFile(temp_file, &test_data[0], test_data.size()));
+            base::WriteFile(temp_file, &test_data[0],
+                            static_cast<int>(test_data.size())));
   ASSERT_TRUE(base::PathExists(temp_file));
 
   int64 file_size = 0;
@@ -67,7 +69,8 @@ TEST(LoggingInstallerTest, TestInUseNeedsTruncation) {
 
   base::FilePath temp_file = temp_dir.path().Append(L"temp");
   EXPECT_EQ(test_data.size(),
-            base::WriteFile(temp_file, &test_data[0], test_data.size()));
+            base::WriteFile(temp_file, &test_data[0],
+                            static_cast<int>(test_data.size())));
   ASSERT_TRUE(base::PathExists(temp_file));
   int64 file_size = 0;
   EXPECT_TRUE(base::GetFileSize(temp_file, &file_size));
@@ -95,7 +98,8 @@ TEST(LoggingInstallerTest, TestMoveFailsNeedsTruncation) {
 
   base::FilePath temp_file = temp_dir.path().Append(L"temp");
   EXPECT_EQ(test_data.size(),
-            base::WriteFile(temp_file, &test_data[0], test_data.size()));
+            base::WriteFile(temp_file, &test_data[0],
+                            static_cast<int>(test_data.size())));
   ASSERT_TRUE(base::PathExists(temp_file));
   int64 file_size = 0;
   EXPECT_TRUE(base::GetFileSize(temp_file, &file_size));