Reduce frequency of requesting bookmark clusters.

components/enhanced_bookmarks/enhanced_bookmark_model_unittest.cc

Index: components/enhanced_bookmarks/enhanced_bookmark_model_unittest.cc
diff --git a/components/enhanced_bookmarks/enhanced_bookmark_model_unittest.cc b/components/enhanced_bookmarks/enhanced_bookmark_model_unittest.cc
index f1b8994e0b5c19c8389c9180166976a484b662fa..0d12de17f0f5d9c5f0f07f47ec56d84cf42f886e 100644
--- a/components/enhanced_bookmarks/enhanced_bookmark_model_unittest.cc
+++ b/components/enhanced_bookmarks/enhanced_bookmark_model_unittest.cc
@@ -35,10 +35,12 @@ class EnhancedBookmarkModelTest
         shutting_down_calls_(0),
         added_calls_(0),
         removed_calls_(0),
+        changed_calls_(0),
         all_user_nodes_removed_calls_(0),
         remote_id_changed_calls_(0),
         last_added_(NULL),
         last_removed_(NULL),
+        last_changed_(NULL),
         last_remote_id_node_(NULL) {}
   ~EnhancedBookmarkModelTest() override {}
 
@@ -118,6 +120,10 @@ class EnhancedBookmarkModelTest
     removed_calls_++;
     last_removed_ = node;
   }
+  void EnhancedBookmarkNodeChanged(const BookmarkNode* node) override {
+    changed_calls_++;
+    last_changed_ = node;
+  }
   void EnhancedBookmarkAllUserNodesRemoved() override {
     all_user_nodes_removed_calls_++;
   }
@@ -135,12 +141,14 @@ class EnhancedBookmarkModelTest
   int shutting_down_calls_;
   int added_calls_;
   int removed_calls_;
+  int changed_calls_;
   int all_user_nodes_removed_calls_;
   int remote_id_changed_calls_;
 
   // Observer parameter cache:
   const BookmarkNode* last_added_;
   const BookmarkNode* last_removed_;
+  const BookmarkNode* last_changed_;
   const BookmarkNode* last_remote_id_node_;
   std::string last_old_remote_id_;
   std::string last_remote_id_;
@@ -592,6 +600,15 @@ TEST_F(EnhancedBookmarkModelTest, ObserverNodeRemovedEvent) {
   EXPECT_EQ(folder, last_removed_);
 }
 
+TEST_F(EnhancedBookmarkModelTest, ObserverNodeChangedEvent) {
+  const BookmarkNode* node = AddBookmark();
+
+  EXPECT_EQ(0, changed_calls_);
+  bookmark_model_->SetTitle(node, base::ASCIIToUTF16("New Title"));
+  EXPECT_EQ(1, changed_calls_);
+  EXPECT_EQ(node, last_changed_);
+}
+
 TEST_F(EnhancedBookmarkModelTest, ObserverAllUserNodesRemovedEvent) {
   AddBookmark();
   AddFolder();