Change most uses of Pickle to base::Pickle

content/common/mac/attributed_string_coder.mm

Index: content/common/mac/attributed_string_coder.mm
diff --git a/content/common/mac/attributed_string_coder.mm b/content/common/mac/attributed_string_coder.mm
index ed377bb91d1374045be73e6548d2b256be3c31b9..edbb0ae69734f5df011bdbecd17bb3ee4fcbb9bf 100644
--- a/content/common/mac/attributed_string_coder.mm
+++ b/content/common/mac/attributed_string_coder.mm
@@ -128,7 +128,9 @@ void ParamTraits<AttributedStringCoder::EncodedString>::Write(
 }
 
 bool ParamTraits<AttributedStringCoder::EncodedString>::Read(
-    const Message* m, PickleIterator* iter, param_type* p) {
+    const Message* m,
+    base::PickleIterator* iter,
+    param_type* p) {
   bool success = true;
 
   base::string16 result;
@@ -151,7 +153,9 @@ void ParamTraits<AttributedStringCoder::FontAttribute>::Write(
 }
 
 bool ParamTraits<AttributedStringCoder::FontAttribute>::Read(
-    const Message* m, PickleIterator* iter, param_type* p) {
+    const Message* m,
+    base::PickleIterator* iter,
+    param_type* p) {
   bool success = true;
 
   FontDescriptor font;