IndexedDB: Use C++11 in-class member initializers

content/common/indexed_db/indexed_db_key.h

Index: content/common/indexed_db/indexed_db_key.h
diff --git a/content/common/indexed_db/indexed_db_key.h b/content/common/indexed_db/indexed_db_key.h
index d9dfa1e340cb4a313726146a8d89e0f15c7e3560..01227819dcdaf9d00d8243c3e74265c82be40f27 100644
--- a/content/common/indexed_db/indexed_db_key.h
+++ b/content/common/indexed_db/indexed_db_key.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
@@ -41,11 +42,26 @@ class CONTENT_EXPORT IndexedDBKey {
   bool Equals(const IndexedDBKey& other) const;
 
   blink::WebIDBKeyType type() const { return type_; }
-  const std::vector<IndexedDBKey>& array() const { return array_; }
-  const std::string& binary() const { return binary_; }
-  const base::string16& string() const { return string_; }
-  double date() const { return date_; }
-  double number() const { return number_; }
+  const std::vector<IndexedDBKey>& array() const {
+    DCHECK_EQ(type_, blink::WebIDBKeyTypeArray);
+    return array_;
+  }
+  const std::string& binary() const {
+    DCHECK_EQ(type_, blink::WebIDBKeyTypeBinary);
+    return binary_;
+  }
+  const base::string16& string() const {
+    DCHECK_EQ(type_, blink::WebIDBKeyTypeString);
+    return string_;
+  }
+  double date() const {
+    DCHECK_EQ(type_, blink::WebIDBKeyTypeDate);
+    return number_;
+  }
+  double number() const {
+    DCHECK_EQ(type_, blink::WebIDBKeyTypeNumber);
+    return number_;
+  }
 
   size_t size_estimate() const { return size_estimate_; }
 
@@ -56,8 +72,7 @@ class CONTENT_EXPORT IndexedDBKey {
   std::vector<IndexedDBKey> array_;
   std::string binary_;
   base::string16 string_;
-  double date_;
-  double number_;
+  double number_ = 0;
 
   size_t size_estimate_;
 };