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

content/child/indexed_db/indexed_db_key_builders.cc

Index: content/child/indexed_db/indexed_db_key_builders.cc
===================================================================
--- content/child/indexed_db/indexed_db_key_builders.cc	(revision 256983)
+++ content/child/indexed_db/indexed_db_key_builders.cc	(working copy)
@@ -45,25 +45,29 @@
   switch (key.keyType()) {
     case WebIDBKeyTypeArray:
       return IndexedDBKey(CopyKeyArray(key));
+
     case WebIDBKeyTypeBinary:
       return IndexedDBKey(
           std::string(key.binary().data(), key.binary().size()));
+
     case WebIDBKeyTypeString:
       return IndexedDBKey(key.string());
+
     case WebIDBKeyTypeDate:
       return IndexedDBKey(key.date(), WebIDBKeyTypeDate);
+
     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) {
@@ -76,25 +80,30 @@
       }
       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(
@@ -111,13 +120,17 @@
   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(
@@ -125,13 +138,17 @@
   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