Convert most of extensions and some other random stuff to using the base namespace for Values.

net/spdy/spdy_session.cc

Index: net/spdy/spdy_session.cc
diff --git a/net/spdy/spdy_session.cc b/net/spdy/spdy_session.cc
index ba8018ca767be4ae1f73d0168e4ec0034f82f192..1f93c03d57dc9c8f4cc1e3e0ab6f90bbc05a90a1 100644
--- a/net/spdy/spdy_session.cc
+++ b/net/spdy/spdy_session.cc
@@ -169,7 +169,7 @@ base::Value* NetLogSpdySessionWindowUpdateCallback(
     int32 delta,
     int32 window_size,
     NetLog::LogLevel /* log_level */) {
-  DictionaryValue* dict = new DictionaryValue();
+  base::DictionaryValue* dict = new base::DictionaryValue();
   dict->SetInteger("delta", delta);
   dict->SetInteger("window_size", window_size);
   return dict;