Refactor away the Browser* dependency in exclusive_access

chrome/browser/ui/exclusive_access/mouse_lock_controller.h

Index: chrome/browser/ui/exclusive_access/mouse_lock_controller.h
diff --git a/chrome/browser/ui/exclusive_access/mouse_lock_controller.h b/chrome/browser/ui/exclusive_access/mouse_lock_controller.h
index 27cede2a628dbfb8a54bb026ece473bc9992dc7b..43c89f217d590c0fdd35f98ab707f1f6f93b4bbc 100644
--- a/chrome/browser/ui/exclusive_access/mouse_lock_controller.h
+++ b/chrome/browser/ui/exclusive_access/mouse_lock_controller.h
@@ -11,7 +11,7 @@
 // This class implements mouselock behavior.
 class MouseLockController : public ExclusiveAccessControllerBase {
  public:
-  MouseLockController(ExclusiveAccessManager* manager, Browser* browser);
+  explicit MouseLockController(ExclusiveAccessManager* manager);
   ~MouseLockController() override;
 
   bool IsMouseLocked() const;