Move NPAPI implementation out of webkit/plugins/npapi and into content.

webkit/plugins/npapi/plugin_utils.h

 // Copyright (c) 2012 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 WEBKIT_PLUGINS_NPAPI_PLUGIN_UTILS_H_
 #define WEBKIT_PLUGINS_NPAPI_PLUGIN_UTILS_H_
 
 #include "base/strings/string16.h"
+#include "ui/gfx/native_widget_types.h"
 
 namespace base {
 class Version;
 }
 
 namespace webkit {
 namespace npapi {
 
 // Parse a version string as used by a plug-in. This method is more lenient
 // in accepting weird version strings than base::Version::GetFromString()
 void CreateVersionFromString(
     const base::string16& version_string,
     base::Version* parsed_version);
 
 // Returns true iff NPAPI plugins are supported on the current platform.
 bool NPAPIPluginsSupported();
 
 // Tells the plugin thread to terminate the process forcefully instead of
 // exiting cleanly.
 void SetForcefullyTerminatePluginProcess(bool value);
 
 // Returns true if the plugin thread should terminate the process forcefully
 // instead of exiting cleanly.
 bool ShouldForcefullyTerminatePluginProcess();
 
+#if defined(OS_WIN)
+// The window class name for a plugin window.
+extern const char16 kNativeWindowClassName[];
+extern const char16 kPluginNameAtomProperty[];
+extern const char16 kPluginVersionAtomProperty[];
+extern const char16 kDummyActivationWindowName[];
+
+bool IsPluginDelegateWindow(HWND window);
+bool GetPluginNameFromWindow(HWND window, base::string16* plugin_name);
+bool GetPluginVersionFromWindow(HWND window, base::string16* plugin_version);
+
+// Returns true if the window handle passed in is that of the dummy
+// activation window for windowless plugins.
+bool IsDummyActivationWindow(HWND window);
+
+// Returns the default HWND to parent the windowed plugins and dummy windows
+// for activation to when none isavailable.
+HWND GetDefaultWindowParent();
+#endif
 
 }  // namespace npapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_NPAPI_PLUGIN_UTILS_H_