ugrr... Fixing printing scaling again.

printing/custom_scaling.cc

Index: printing/custom_scaling.cc
===================================================================
--- printing/custom_scaling.cc	(revision 0)
+++ printing/custom_scaling.cc	(revision 0)
@@ -0,0 +1,37 @@
+// Copyright (c) 2011 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.
+
+#include "printing/custom_scaling.h"
+
+#include "base/threading/thread_local.h"
+
+namespace printing {
+
+static base::ThreadLocalPointer<double> gPrintingPageScale;
+
+bool GetCustomPrintingPageScale(double* scale) {
+  double* ptr = gPrintingPageScale.Get();
+  if (ptr != NULL) {
+    *scale = *ptr;
+  }
+  return ptr != NULL;
+}
+
+void SetCustomPrintingPageScale(double scale) {
+  ClearCustomPrintingPageScale();
+  double* ptr = new double;
+  *ptr = scale;
+  gPrintingPageScale.Set(ptr);
+}
+
+void ClearCustomPrintingPageScale() {
+  double* ptr = gPrintingPageScale.Get();
+  if (ptr != NULL) {
+    delete ptr;
+  }
+  gPrintingPageScale.Set(NULL);
+}
+
+}  // namespace printing
+