Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/common/indexed_db/indexed_db_dispatcher_unittest.cc

 // Copyright (c) 2012 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 "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "content/common/indexed_db/indexed_db_dispatcher.h"
 #include "content/common/indexed_db/indexed_db_key.h"
 #include "content/public/common/serialized_script_value.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebExceptionCode.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCallbacks.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBTransaction.h"
 
-using content::IndexedDBKey;
-using content::SerializedScriptValue;
 using WebKit::WebVector;
 using WebKit::WebString;
 
+namespace content {
+
 class FakeWebIDBTransaction : public WebKit::WebIDBTransaction {
  public:
   FakeWebIDBTransaction() {}
 };
 
 TEST(IndexedDBDispatcherTest, ValueSizeTest) {
   string16 data;
   data.resize(kMaxIDBValueSizeInBytes / sizeof(char16) + 1, 'x');
   const bool kIsNull = false;
   const bool kIsInvalid = false;
@@ skipping 11 matching lines @@
         WebKit::WebIDBObjectStore::AddOrUpdate,
         static_cast<WebKit::WebIDBCallbacks*>(NULL),
         dummy_id,
         FakeWebIDBTransaction(),
         WebVector<WebString>(),
         WebVector<WebVector<WebKit::WebIDBKey> >(),
         &ec);
     EXPECT_NE(ec, 0);
   }
 }
+
+}  // namespace content