Provide API in RequestCoordinator to remove results by client ID.

components/offline_pages/background/request_coordinator.cc

Index: components/offline_pages/background/request_coordinator.cc
diff --git a/components/offline_pages/background/request_coordinator.cc b/components/offline_pages/background/request_coordinator.cc
index 13ab786e6ef39a623022bb3190f01917e1410029..fca2ab55c5a334edaf53a8cc4d99a2f6d7c9a3c0 100644
--- a/components/offline_pages/background/request_coordinator.cc
+++ b/components/offline_pages/background/request_coordinator.cc
@@ -70,6 +70,16 @@ bool RequestCoordinator::SavePageLater(
   return true;
 }
 
+// If the client does not need the pages after all, then cancel them.

[dougarnett, 2016/08/01 18:28:35]

drop comment here - just keep .h comment up-to-date?

[Pete Williamson, 2016/08/01 23:23:07]

Done.

+void RequestCoordinator::RemoveRequests(
+    const std::vector<ClientId>& client_ids) {
+
+  queue_->RemoveRequestsByClientId(
+      client_ids,
+      base::Bind(&RequestCoordinator::UpdateRequestCallback,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
 void RequestCoordinator::AddRequestResultCallback(
     RequestQueue::AddRequestResult result,
     const SavePageRequest& request) {