Revert "Remove several unused forward declarations. Fixes PR22605."
This is being resubmitted as it was accidentally dropped in the merge.
GCC fails to compile the following pattern with this patch:
#include <set>
std::set<int> foo;
#include <map>
using namespace std;
std::map<int, int> bar;
It looks like a GCC bug, but there is some external code that trips
this issue that I'd rather leave unmodified.
This reverts commit 59f573f670a4ff53919fcdfc2f40725723eb2c04.
Bug: http://b/19606303
Change-Id: I02270c28220578f432a201e1d2cbeefc537e9e25
3 files changed
