Change most uses of Pickle to base::Pickle

content/common/gamepad_param_traits.cc

Index: content/common/gamepad_param_traits.cc
diff --git a/content/common/gamepad_param_traits.cc b/content/common/gamepad_param_traits.cc
index cc60d7c86cd6d7301e08595c588e472a08a69b47..cbc7e6aa088a3efe733411186c58fc3ee48a9f90 100644
--- a/content/common/gamepad_param_traits.cc
+++ b/content/common/gamepad_param_traits.cc
@@ -36,10 +36,9 @@ void ParamTraits<WebGamepad>::Write(
   m->WriteData(reinterpret_cast<const char*>(&p), sizeof(WebGamepad));
 }
 
-bool ParamTraits<WebGamepad>::Read(
-    const Message* m,
-    PickleIterator* iter,
-    WebGamepad* p) {
+bool ParamTraits<WebGamepad>::Read(const Message* m,
+                                   base::PickleIterator* iter,
+                                   WebGamepad* p) {
   int length;
   const char* data;
   if (!iter->ReadData(&data, &length) || length != sizeof(WebGamepad))