win: Implementation of CrashReportDatabase for Windows

util/test/scoped_temp_dir_win.cc

Index: util/test/scoped_temp_dir_win.cc
diff --git a/util/test/scoped_temp_dir_win.cc b/util/test/scoped_temp_dir_win.cc
index 19a1d667fc7a1d8cb8de7d8a0605419a658b4706..f641ec2b750d9adb160692e66e4f2ba5edd99bec 100644
--- a/util/test/scoped_temp_dir_win.cc
+++ b/util/test/scoped_temp_dir_win.cc
@@ -26,21 +26,44 @@
 namespace crashpad {
 namespace test {
 
-// static
-base::FilePath ScopedTempDir::CreateTemporaryDirectory() {
+namespace {
+
+base::FilePath GenerateCandidateName() {
   wchar_t temp_path[MAX_PATH + 1];
   DWORD path_len = GetTempPath(MAX_PATH, temp_path);
   PCHECK(path_len != 0) << "GetTempPath";
   base::FilePath system_temp_dir(temp_path);
+  base::string16 new_dir_name = base::UTF8ToUTF16(base::StringPrintf(
+        "crashpad.test.%d.%I64x", GetCurrentProcessId(), base::RandUint64()));
+  return system_temp_dir.Append(new_dir_name);
+}
+
+const int kRetries = 50;
 
-  for (int count = 0; count < 50; ++count) {
-    // Try create a new temporary directory with random generated name. If the
-    // one we generate exists, keep trying another path name until we reach some
+}  // namespace
+
+void ScopedTempDir::Rename() {
+  for (int count = 0; count < kRetries; ++count) {
+    // Try to move to a new temporary directory with a randomly generated name.
+    // If the one we try exists, retry with a new name until we reach some
     // limit.
-    base::string16 new_dir_name = base::UTF8ToUTF16(base::StringPrintf(
-        "crashpad.test.%d.%I64x", GetCurrentProcessId(), base::RandUint64()));
+    base::FilePath target_path = GenerateCandidateName();
+    if (MoveFileEx(path_.value().c_str(), target_path.value().c_str(), 0)) {
+      path_ = target_path;
+      return;
+    }
+  }
 
-    base::FilePath path_to_create = system_temp_dir.Append(new_dir_name);
+  CHECK(false) << "Couldn't find temp dir name";
+}
+
+// static
+base::FilePath ScopedTempDir::CreateTemporaryDirectory() {
+  for (int count = 0; count < kRetries; ++count) {
+    // Try to create a new temporary directory with random generated name. If
+    // the one we generate exists, keep trying another path name until we reach
+    // some limit.
+    base::FilePath path_to_create = GenerateCandidateName();
     if (CreateDirectory(path_to_create.value().c_str(), NULL))
       return path_to_create;
   }