Revert https://src.chromium.org/viewvc/chrome?view=rev&revision=231330
This is a speculative revert to see if it's the cause of hanging renderers.

BUG=313112

Review URL: https://codereview.chromium.org/57783006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232819 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/pickle.h b/base/pickle.h
index 22daa19..3254837 100644
--- a/base/pickle.h
+++ b/base/pickle.h
@@ -114,7 +114,7 @@
   // instead the data is merely referenced by this Pickle.  Only const methods
   // should be used on the Pickle when initialized this way.  The header
   // padding size is deduced from the data length.
-  Pickle(const char* data, size_t data_len);
+  Pickle(const char* data, int data_len);
 
   // Initializes a Pickle as a deep copy of another Pickle.
   Pickle(const Pickle& other);