★ Record the image dominant color in the image database.

components/enhanced_bookmarks/persistent_image_store.h

Index: components/enhanced_bookmarks/persistent_image_store.h
diff --git a/components/enhanced_bookmarks/persistent_image_store.h b/components/enhanced_bookmarks/persistent_image_store.h
index bc715a502746566226b4bd59d7f017990b9ef185..5a0c41d596297ec36a8972a8f23d0be9023700ff 100644
--- a/components/enhanced_bookmarks/persistent_image_store.h
+++ b/components/enhanced_bookmarks/persistent_image_store.h
@@ -10,6 +10,7 @@
 #include "base/files/file_path.h"
 #include "sql/connection.h"
 #include "sql/init_status.h"
+#include "sql/meta_table.h"
 
 // The PersistentImageStore is an implementation of ImageStore that persists its
 // data on disk.
@@ -19,10 +20,9 @@ class PersistentImageStore : public ImageStore {
   explicit PersistentImageStore(const base::FilePath& path);
   bool HasKey(const GURL& page_url) override;
   void Insert(const GURL& page_url,
-              const GURL& image_url,
-              const gfx::Image& image) override;
+              const enhanced_bookmarks::ImageRecord& image) override;
   void Erase(const GURL& page_url) override;
-  std::pair<gfx::Image, GURL> Get(const GURL& page_url) override;
+  enhanced_bookmarks::ImageRecord Get(const GURL& page_url) override;
   gfx::Size GetSize(const GURL& page_url) override;
   void GetAllPageUrls(std::set<GURL>* urls) override;
   void ClearAll() override;
@@ -36,6 +36,7 @@ class PersistentImageStore : public ImageStore {
 
   const base::FilePath path_;
   sql::Connection db_;
+  sql::MetaTable meta_table_;
 
   DISALLOW_COPY_AND_ASSIGN(PersistentImageStore);
 };