ui: Fix removing a number from the SequentialIDGenerator.

ui/base/sequential_id_generator.cc

Index: ui/base/sequential_id_generator.cc
diff --git a/ui/base/sequential_id_generator.cc b/ui/base/sequential_id_generator.cc
index 492efe5af8219d83382a4f7e6793fb38d596e32a..8ab90eb7fd06a85379471586d1570b6ae1358ffe 100644
--- a/ui/base/sequential_id_generator.cc
+++ b/ui/base/sequential_id_generator.cc
@@ -59,6 +59,12 @@ void SequentialIDGenerator::ReleaseGeneratedID(uint32 id) {
 }
 
 void SequentialIDGenerator::ReleaseNumber(uint32 number) {
+  DCHECK_GT(number_to_id_.count(number), 0U);
+  uint32 id = number_to_id_[number];
+  if (id < min_available_id_) {

[sky, 2013/09/16 23:49:27]

Refactor 54-57 and 64-67 to a common method?

[sadrul, 2013/09/17 02:26:38]

Done.

+    min_available_id_ = id;
+    DCHECK_GE(min_available_id_, min_id_);
+  }
   Remove(number, &number_to_id_, &id_to_number_);
 }