Move the windows-specific scoped_* stuff from base to base/win and in the base::win namespace.

This keeps old headers that forward to the new versions and have using declarations that allow the existing code to compile. I fixed all the callers in base to use the new ones, and also the other files I happened to touch.

This splits out the stuff from scoped_handle into a few separate files. I just deleted ScopedFindFile since it was only used in one place and it wasn't even really helping there.

I removed StackBstr which was a #define and used the "regular" ScopedBstr in the 7 places that used it. This is an optimization to avoid an extra allocation, but none of the callers are remotely performance critical.

TEST=it compiles
BUG=none
Review URL: http://codereview.chromium.org/3781009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62843 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 55 insertions, 0 deletions

diff --git a/base/win/scoped_hdc.h b/base/win/scoped_hdc.h
new file mode 100644
index 0000000..73d369a7
--- /dev/null
+++ b/base/win/scoped_hdc.h
@@ -0,0 +1,55 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_WIN_SCOPED_HDC_H_
+#define BASE_WIN_SCOPED_HDC_H_
+#pragma once
+
+#include <windows.h>
+
+#include "base/basictypes.h"
+
+namespace base {
+namespace win {
+
+// Like ScopedHandle but for HDC.  Only use this on HDCs returned from
+// CreateCompatibleDC.  For an HDC returned by GetDC, use ReleaseDC instead.
+class ScopedHDC {
+ public:
+  ScopedHDC() : hdc_(NULL) { }
+  explicit ScopedHDC(HDC h) : hdc_(h) { }
+
+  ~ScopedHDC() {
+    Close();
+  }
+
+  HDC Get() {
+    return hdc_;
+  }
+
+  void Set(HDC h) {
+    Close();
+    hdc_ = h;
+  }
+
+  operator HDC() { return hdc_; }
+
+ private:
+  void Close() {
+#ifdef NOGDI
+    assert(false);
+#else
+    if (hdc_)
+      DeleteDC(hdc_);
+#endif  // NOGDI
+  }
+
+  HDC hdc_;
+  DISALLOW_COPY_AND_ASSIGN(ScopedHDC);
+};
+
+}  // namespace win
+}  // namespace base
+
+#endif  // BASE_WIN_SCOPED_HDC_H_