Update uses of UTF conversions in content/ to use the base:: namespace.

content/renderer/dom_storage/dom_storage_cached_area_unittest.cc

Index: content/renderer/dom_storage/dom_storage_cached_area_unittest.cc
diff --git a/content/renderer/dom_storage/dom_storage_cached_area_unittest.cc b/content/renderer/dom_storage/dom_storage_cached_area_unittest.cc
index 04b5a286edcf55ba1577688db74c57ac08598741..eeec43ee91e5347a22dc97ffdabaee87b014ffbc 100644
--- a/content/renderer/dom_storage/dom_storage_cached_area_unittest.cc
+++ b/content/renderer/dom_storage/dom_storage_cached_area_unittest.cc
@@ -120,8 +120,8 @@ class DOMStorageCachedAreaTest : public testing::Test {
   DOMStorageCachedAreaTest()
     : kNamespaceId(10),
       kOrigin("http://dom_storage/"),
-      kKey(ASCIIToUTF16("key")),
-      kValue(ASCIIToUTF16("value")),
+      kKey(base::ASCIIToUTF16("key")),
+      kValue(base::ASCIIToUTF16("value")),
       kPageUrl("http://dom_storage/page") {
   }