Mouse lock implementation, including the renderer side and the Windows version of the browser side.

webkit/plugins/ppapi/plugin_delegate.h

 // 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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 #define WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 
 #include <string>
 
 #include "base/callback_old.h"
@@ skipping 428 matching lines @@
   // TODO(viettrungluu): Generalize this for use with other plugins if it proves
   // necessary.
   virtual std::string GetFlashCommandLineArgs() = 0;
 
   // Create an anonymous shared memory segment of size |size| bytes, and return
   // a pointer to it, or NULL on error.  Caller owns the returned pointer.
   virtual base::SharedMemory* CreateAnonymousSharedMemory(uint32_t size) = 0;
 
   // Returns the current preferences.
   virtual ::ppapi::Preferences GetPreferences() = 0;
+
+  // Locks the mouse for |instance|. It will call
+  // PluginInstance::OnLockMouseACK() to notify the instance when the operation
+  // is completed. The call to OnLockMouseACK() may be synchronous (i.e., it may
+  // be called when LockMouse() is still on the stack).
+  virtual void LockMouse(PluginInstance* instance) = 0;
+
+  // Unlocks the mouse if |instance| currently owns the mouse lock. Whenever an
+  // plugin instance has lost the mouse lock, it will be notified by
+  // PluginInstance::OnMouseLockLost(). Please note that UnlockMouse() is not
+  // the only cause of losing mouse lock. For example, a user may press the Esc
+  // key to quit the mouse lock mode, which also results in an OnMouseLockLost()
+  // call to the current mouse lock owner.
+  virtual void UnlockMouse(PluginInstance* instance) = 0;
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_