Remove dead code from content::LockManager.

Change-Id: I4bd4701f88cf0c266e136b641501800bc98be1c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1829477
Commit-Queue: François Doray <fdoray@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#700903}

content/browser/locks/lock_manager.cc

@@ -85,15 +85,6 @@ class LockManager::Lock {
 
   ~Lock() = default;
 
-  // Abort a lock request.
-  void Abort(const std::string& message) {
-    DCHECK(request_);
-    DCHECK(!handle_);
-
-    request_->Abort(message);
-    request_.reset();
-  }
-
   // Grant a lock request. This mints a LockHandle and returns it over the
   // request pipe.
   void Grant(base::WeakPtr<LockManager> context, const url::Origin& origin) {

content/browser/locks/lock_manager.h

@@ -80,20 +80,10 @@ class LockManager : public base::RefCountedThreadSafe<LockManager>,
     url::Origin origin;
   };
 
-  bool IsGrantable(const url::Origin& origin,
-                   const std::string& name,
-                   blink::mojom::LockMode mode) const;
-
   // Mints a monotonically increasing identifier. Used both for lock requests
   // and granted locks as keys in ordered maps.
   int64_t NextLockId();
 
-  void Break(const url::Origin& origin, const std::string& name);
-
-  // Called when a lock is requested and optionally when a lock is released,
-  // to process outstanding requests within the origin.
-  void ProcessRequests(const url::Origin& origin);
-
   mojo::ReceiverSet<blink::mojom::LockManager, ReceiverState> receivers_;
 
   int64_t next_lock_id_ = 0;