Set up a interposing library for Carbon calls made by plugins.

webkit/glue/plugins/fake_plugin_window_tracker_mac.cc

+// Copyright (c) 2009 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 "base/logging.h"
+#include "webkit/glue/plugins/fake_plugin_window_tracker_mac.h"
+
+FakePluginWindowTracker::FakePluginWindowTracker()
+    : window_to_delegate_map_(CFDictionaryCreateMutable(kCFAllocatorDefault,
+                                                        0, NULL, NULL)) {
+}
+
+FakePluginWindowTracker* FakePluginWindowTracker::SharedInstance() {
+  static FakePluginWindowTracker* tracker = new FakePluginWindowTracker();
+  return tracker;
+}
+
+WindowRef FakePluginWindowTracker::GenerateFakeWindowForDelegate(
+    WebPluginDelegateImpl* delegate) {
+  // TODO(stuartmorgan): Eventually we will be interposing enough that we don't
+  // even need a window, and can just use made-up identifiers, but for now we
+  // create one so that things that we don't interpose won't crash trying to use
+  // a bad WindowRef.
+
+  // The real size will be set by the plugin instance, once that size is known.
+  Rect window_bounds = { 0, 0, 100, 100 };
+  WindowRef new_ref = NULL;
+  if (CreateNewWindow(kDocumentWindowClass,
+                      kWindowStandardDocumentAttributes,
+                      &window_bounds,
+                      &new_ref) == noErr) {
+    CFDictionaryAddValue(window_to_delegate_map_, new_ref, delegate);
+  }
+  return new_ref;
+}
+
+const WebPluginDelegateImpl* FakePluginWindowTracker::GetDelegateForFakeWindow(
+    WindowRef window) const {
+  return static_cast<const WebPluginDelegateImpl*>(
+      CFDictionaryGetValue(window_to_delegate_map_, window));
+}
+
+void FakePluginWindowTracker::RemoveFakeWindowForDelegate(
+    WebPluginDelegateImpl* delegate, WindowRef window) {
+  DCHECK(GetDelegateForFakeWindow(window) == delegate);
+  CFDictionaryRemoveValue(window_to_delegate_map_, delegate);
+  if (window)  // Check just in case the initial window creation failed.
+    DisposeWindow(window);
+}