MFC r262528: Update LLDB snapshot to upstream r202189

  Highlights include (upstream revs in parens):

  - Improvements to the remote GDB protocol client
    (r196610, r197579, r197857, r200072, and others)

  - Bug fixes for big-endian targets
    (r196808)

  - Initial support for libdispatch (GCD) queues in the debuggee
    (r197190)

  - Add "step-avoid-libraries" setting
    (r199943)

  - IO subsystem improvements (including initial work on a curses gui)
    (r200263)

  - Support hardware watchpoints on FreeBSD
    (r201706)

  - Improved unwinding through hand-written assembly functions
    (r201839)

  - Handle DW_TAG_unspecified_parameters for variadic functions
    (r202061)

  - Fix Ctrl+C interrupting a running inferior process
    (r202086, r202154)

  - Various bug fixes for memory leaks, LLDB segfaults, the C++ demangler,
    ELF core files, DWARF debug info, and others.

Sponsored by:	DARPA, AFRL

1 files changed, 17 insertions, 8 deletions

diff --git a/contrib/llvm/tools/lldb/source/Commands/CommandObjectExpression.h b/contrib/llvm/tools/lldb/source/Commands/CommandObjectExpression.h
index e0703a2..c943f0e 100644
--- a/contrib/llvm/tools/lldb/source/Commands/CommandObjectExpression.h
+++ b/contrib/llvm/tools/lldb/source/Commands/CommandObjectExpression.h
@@ -14,6 +14,7 @@
 // C++ Includes
 // Other libraries and framework includes
 // Project includes
+#include "lldb/Core/IOHandler.h"
 #include "lldb/Interpreter/CommandObject.h"
 #include "lldb/Interpreter/OptionGroupFormat.h"
 #include "lldb/Interpreter/OptionGroupValueObjectDisplay.h"
@@ -21,7 +22,9 @@
 
 namespace lldb_private {
 
-class CommandObjectExpression : public CommandObjectRaw
+class CommandObjectExpression :
+    public CommandObjectRaw,
+    public IOHandlerDelegate
 {
 public:
 
@@ -71,17 +74,23 @@ public:
     GetOptions ();
 
 protected:
+    
+    //------------------------------------------------------------------
+    // IOHandler::Delegate functions
+    //------------------------------------------------------------------
+    virtual void
+    IOHandlerInputComplete (IOHandler &io_handler,
+                            std::string &line);
+
+    virtual LineStatus
+    IOHandlerLinesUpdated (IOHandler &io_handler,
+                           StringList &lines,
+                           uint32_t line_idx,
+                           Error &error);
     virtual bool
     DoExecute (const char *command,
                CommandReturnObject &result);
 
-    static size_t
-    MultiLineExpressionCallback (void *baton, 
-                                 InputReader &reader, 
-                                 lldb::InputReaderAction notification,
-                                 const char *bytes, 
-                                 size_t bytes_len);
-
     bool
     EvaluateExpression (const char *expr,
                         Stream *output_stream,