Fix "unreachable code" warnings (MSVC warning 4702) in content/.

content/child/indexed_db/indexed_db_key_builders.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/indexed_db/indexed_db_key_builders.h"
 
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 
 using blink::WebIDBKey;
@@ skipping 44 matching lines @@
     case WebIDBKeyTypeNumber:
       return IndexedDBKey(key.number(), WebIDBKeyTypeNumber);
     case WebIDBKeyTypeNull:
     case WebIDBKeyTypeInvalid:
       return IndexedDBKey(key.keyType());
     case WebIDBKeyTypeMin:
     default:
       NOTREACHED();
       return IndexedDBKey();
   }
-  NOTREACHED();
-  return IndexedDBKey();
 }
 
 WebIDBKey WebIDBKeyBuilder::Build(const IndexedDBKey& key) {
   switch (key.type()) {
     case WebIDBKeyTypeArray: {
       const IndexedDBKey::KeyArray& array = key.array();
       blink::WebVector<WebIDBKey> web_array(array.size());
       for (size_t i = 0; i < array.size(); ++i) {
         web_array[i] = Build(array[i]);
       }
       return WebIDBKey::createArray(web_array);
     }
     case WebIDBKeyTypeBinary:
       return WebIDBKey::createBinary(key.binary());
     case WebIDBKeyTypeString:
       return WebIDBKey::createString(key.string());
     case WebIDBKeyTypeDate:
       return WebIDBKey::createDate(key.date());
     case WebIDBKeyTypeNumber:
       return WebIDBKey::createNumber(key.number());
     case WebIDBKeyTypeInvalid:
       return WebIDBKey::createInvalid();
     case WebIDBKeyTypeNull:
       return WebIDBKey::createNull();
     case WebIDBKeyTypeMin:
     default:
       NOTREACHED();
       return WebIDBKey::createInvalid();
   }
-  NOTREACHED();
-  return WebIDBKey::createInvalid();
 }
 
 IndexedDBKeyRange IndexedDBKeyRangeBuilder::Build(
     const WebIDBKeyRange& key_range) {
   return IndexedDBKeyRange(
     IndexedDBKeyBuilder::Build(key_range.lower()),
     IndexedDBKeyBuilder::Build(key_range.upper()),
     key_range.lowerOpen(),
     key_range.upperOpen());
 }
 
 IndexedDBKeyPath IndexedDBKeyPathBuilder::Build(
     const blink::WebIDBKeyPath& key_path) {
   switch (key_path.keyPathType()) {
     case blink::WebIDBKeyPathTypeString:
       return IndexedDBKeyPath(key_path.string());
     case blink::WebIDBKeyPathTypeArray:
       return IndexedDBKeyPath(CopyArray(key_path.array()));
     case blink::WebIDBKeyPathTypeNull:
       return IndexedDBKeyPath();
+    default:
+      NOTREACHED();
+      return IndexedDBKeyPath();
   }
-  NOTREACHED();
-  return IndexedDBKeyPath();
 }
 
 blink::WebIDBKeyPath WebIDBKeyPathBuilder::Build(
     const IndexedDBKeyPath& key_path) {
   switch (key_path.type()) {
     case blink::WebIDBKeyPathTypeString:
       return blink::WebIDBKeyPath::create(WebString(key_path.string()));
     case blink::WebIDBKeyPathTypeArray:
       return blink::WebIDBKeyPath::create(CopyArray(key_path.array()));
     case blink::WebIDBKeyPathTypeNull:
       return blink::WebIDBKeyPath::createNull();
+    default:
+      NOTREACHED();
+      return blink::WebIDBKeyPath::createNull();
   }
-  NOTREACHED();
-  return blink::WebIDBKeyPath::createNull();
 }
 
 }  // namespace content