Convert string16 to base::string16 in content.

content/common/indexed_db/indexed_db_key_path.h

Index: content/common/indexed_db/indexed_db_key_path.h
diff --git a/content/common/indexed_db/indexed_db_key_path.h b/content/common/indexed_db/indexed_db_key_path.h
index a17c193bd2004c740554a464fe657b194f0333ad..ec5e8611b235dc579321b8326e854b925ddfe32f 100644
--- a/content/common/indexed_db/indexed_db_key_path.h
+++ b/content/common/indexed_db/indexed_db_key_path.h
@@ -17,21 +17,21 @@ namespace content {
 class CONTENT_EXPORT IndexedDBKeyPath {
  public:
   IndexedDBKeyPath();  // Defaults to blink::WebIDBKeyPathTypeNull.
-  explicit IndexedDBKeyPath(const string16&);
-  explicit IndexedDBKeyPath(const std::vector<string16>&);
+  explicit IndexedDBKeyPath(const base::string16&);
+  explicit IndexedDBKeyPath(const std::vector<base::string16>&);
   ~IndexedDBKeyPath();
 
   bool IsNull() const { return type_ == blink::WebIDBKeyPathTypeNull; }
   bool operator==(const IndexedDBKeyPath& other) const;
 
   blink::WebIDBKeyPathType type() const { return type_; }
-  const std::vector<string16>& array() const;
-  const string16& string() const;
+  const std::vector<base::string16>& array() const;
+  const base::string16& string() const;
 
  private:
   blink::WebIDBKeyPathType type_;
-  string16 string_;
-  std::vector<string16> array_;
+  base::string16 string_;
+  std::vector<base::string16> array_;
 };
 
 }  // namespace content