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

content/common/indexed_db/proxy_webidbobjectstore_impl.h

Index: content/common/indexed_db/proxy_webidbobjectstore_impl.h
===================================================================
--- content/common/indexed_db/proxy_webidbobjectstore_impl.h	(revision 163290)
+++ content/common/indexed_db/proxy_webidbobjectstore_impl.h	(working copy)
@@ -17,6 +17,8 @@
 class WebString;
 }
 
+namespace content {
+
 class RendererWebIDBObjectStoreImpl : public WebKit::WebIDBObjectStore {
  public:
   explicit RendererWebIDBObjectStoreImpl(int32 idb_object_store_id);
@@ -86,4 +88,6 @@
   int32 idb_object_store_id_;
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBOBJECTSTORE_IMPL_H_