Silent mouse lock after unlock by target

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index a3e070bb86eca1205d02b5c8e6a095ac1c012a3c..7cfb433687d6a7c45a4bf05c131750413028033f 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -12,6 +12,7 @@
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "content/common/content_export.h"
+#include "content/common/mouse_lock.h"
 #include "content/public/browser/navigation_type.h"
 #include "content/public/common/page_transition_types.h"
 #include "content/public/common/window_container_type.h"
@@ -392,7 +393,9 @@ class CONTENT_EXPORT WebContentsDelegate {
   // GotResponseToLockMouseRequest() will be called on the requesting tab
   // contents.
   virtual void RequestToLockMouse(WebContents* web_contents,
-                                  bool user_gesture) {}
+                                  MouseLockSource lock_source,
+                                  MouseUnlockSource previous_unlock_source) {
+  }
 
   // Notification that the page has lost the mouse lock.
   virtual void LostMouseLock() {}