Use builders to convert between WebKit and content IDB types

content/common/indexed_db/indexed_db_key_range.cc

Index: content/common/indexed_db/indexed_db_key_range.cc
diff --git a/content/common/indexed_db/indexed_db_key_range.cc b/content/common/indexed_db/indexed_db_key_range.cc
index 77b9b9af8320974924fddab4d5e829e1f9ee6a2b..2c113eefe94fcf7abf4ef2c7a2975b5c7e76e329 100644
--- a/content/common/indexed_db/indexed_db_key_range.cc
+++ b/content/common/indexed_db/indexed_db_key_range.cc
@@ -5,24 +5,16 @@
 #include "content/common/indexed_db/indexed_db_key_range.h"
 
 #include "base/logging.h"
-#include "third_party/WebKit/public/platform/WebIDBKey.h"
+#include "third_party/WebKit/public/platform/WebIDBTypes.h"
 
 namespace content {
 
-using WebKit::WebIDBKeyRange;
-
 IndexedDBKeyRange::IndexedDBKeyRange()
     : lower_(WebKit::WebIDBKeyTypeNull),
       upper_(WebKit::WebIDBKeyTypeNull),
       lower_open_(false),
       upper_open_(false) {}
 
-IndexedDBKeyRange::IndexedDBKeyRange(const WebIDBKeyRange& key_range)
-    : lower_(key_range.lower()),
-      upper_(key_range.upper()),
-      lower_open_(key_range.lowerOpen()),
-      upper_open_(key_range.upperOpen()) {}
-
 IndexedDBKeyRange::IndexedDBKeyRange(const IndexedDBKey& lower,
                                      const IndexedDBKey& upper,
                                      bool lower_open,
@@ -44,8 +36,4 @@ bool IndexedDBKeyRange::IsOnlyKey() const {
   return lower_.IsEqual(upper_);
 }
 
-IndexedDBKeyRange::operator WebIDBKeyRange() const {
-  return WebIDBKeyRange(lower_, upper_, lower_open_, upper_open_);
-}
-
 }  // namespace content