Revert "Remove bogus fastpath from String::Equals(const StringPiece&)"

This reverts commit 8438ed31e10f3881ed92f03877d5edaca7d5b48c.

Bug: 10614658
Change-Id: I335f10a7140e1644957bc1cee21a9b310a558499
diff --git a/runtime/thread.cc b/runtime/thread.cc
index 26b9c31..a454195 100644
--- a/runtime/thread.cc
+++ b/runtime/thread.cc
@@ -819,8 +819,7 @@
         mh.ChangeMethod(m);
         const char* source_file(mh.GetDeclaringClassSourceFile());
         os << "(" << (source_file != NULL ? source_file : "unavailable")
-           << ":" << line_number << ")"
-           << " <0x" << std::hex << GetDexPc() << ">";
+           << ":" << line_number << ")";
       }
       os << "\n";
       if (frame_count == 0) {
@@ -1922,7 +1921,6 @@
   ThrowLocation throw_location;
   mirror::Throwable* exception = GetException(&throw_location);
   CHECK(exception != NULL);
-  LG << "XXX bdc QuickDeliverException " << PrettyMethod(throw_location.GetMethod()) << " " << std::hex << throw_location.GetDexPc();
   // Don't leave exception visible while we try to find the handler, which may cause class
   // resolution.
   ClearException();