Use builders to convert between WebKit and content IDB types

content/common/indexed_db/indexed_db_key_range.h

Index: content/common/indexed_db/indexed_db_key_range.h
diff --git a/content/common/indexed_db/indexed_db_key_range.h b/content/common/indexed_db/indexed_db_key_range.h
index 165168afd0b558da2d51f969b198490644cbb741..67248b6ba2ba71c010c0d666f40db08cb66308c8 100644
--- a/content/common/indexed_db/indexed_db_key_range.h
+++ b/content/common/indexed_db/indexed_db_key_range.h
@@ -8,14 +8,12 @@
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
 #include "content/common/indexed_db/indexed_db_key.h"
-#include "third_party/WebKit/public/platform/WebIDBKeyRange.h"
 
 namespace content {
 
 class CONTENT_EXPORT IndexedDBKeyRange {
  public:
   IndexedDBKeyRange();
-  explicit IndexedDBKeyRange(const WebKit::WebIDBKeyRange& key_range);
   explicit IndexedDBKeyRange(const IndexedDBKey& onlyKey);
   IndexedDBKeyRange(const IndexedDBKey& lower,
                     const IndexedDBKey& upper,
@@ -30,8 +28,6 @@ class CONTENT_EXPORT IndexedDBKeyRange {
 
   bool IsOnlyKey() const;
 
-  operator WebKit::WebIDBKeyRange() const;
-
  private:
   IndexedDBKey lower_;
   IndexedDBKey upper_;