Fix large cursors not to trigger MouseLock

remoting/client/plugin/pepper_input_handler.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 REMOTING_CLIENT_PLUGIN_PEPPER_INPUT_HANDLER_H_
 #define REMOTING_CLIENT_PLUGIN_PEPPER_INPUT_HANDLER_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/cpp/mouse_lock.h"
@@ skipping 25 matching lines @@
 
   bool HandleInputEvent(const pp::InputEvent& event);
 
   // Enables locking the mouse when the host sets a completely transparent mouse
   // cursor.
   void AllowMouseLock();
 
   // Called when the plugin receives or loses focus.
   void DidChangeFocus(bool has_focus);
 
-  // Sets the mouse cursor image. Passing NULL image will lock the mouse if
-  // mouse lock is enabled.
+  // Sets the mouse cursor image. Passing NULL |image| will cause the cursor to
+  // be hidden.
+  // Passing NULL |image| will also cause mouse-lock to be entered, if allowed.
   void SetMouseCursor(scoped_ptr<pp::ImageData> image,
                       const pp::Point& hotspot);
 
+  // Hides the mousr cursor without triggering mouse-lock.
+  void HideMouseCursor();
+
   // Enable or disable sending mouse input when the plugin does not have input
   // focus.
   void set_send_mouse_input_when_unfocused(bool send) {
     send_mouse_input_when_unfocused_ = send;
   }
 
  private:
   enum MouseLockState {
     MouseLockDisallowed,
     MouseLockOff,
@@ skipping 46 matching lines @@
   float wheel_delta_y_;
   float wheel_ticks_x_;
   float wheel_ticks_y_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperInputHandler);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_PEPPER_INPUT_HANDLER_H_