xp: copy dbghelp.dll to output dir and have base.isolate use it there

base/debug/stack_trace_unittest.cc

Index: base/debug/stack_trace_unittest.cc
diff --git a/base/debug/stack_trace_unittest.cc b/base/debug/stack_trace_unittest.cc
index 32b4e689af437d8043c11fbe883a2ddd62aeaec9..15c90939a2e7e6c6a0dd81b929e7d587c7d042fa 100644
--- a/base/debug/stack_trace_unittest.cc
+++ b/base/debug/stack_trace_unittest.cc
@@ -120,8 +120,7 @@ TEST_F(StackTraceTest, MAYBE_OutputToStream) {
 }
 
 // The test is used for manual testing, e.g., to see the raw output.
-// TODO(scottmg): http://crbug.com/461160
-TEST_F(StackTraceTest, DISABLED_DebugOutputToStream) {
+TEST_F(StackTraceTest, DebugOutputToStream) {
   StackTrace trace;
   std::ostringstream os;
   trace.OutputToStream(&os);
@@ -129,8 +128,7 @@ TEST_F(StackTraceTest, DISABLED_DebugOutputToStream) {
 }
 
 // The test is used for manual testing, e.g., to see the raw output.
-// TODO(scottmg): http://crbug.com/461160
-TEST_F(StackTraceTest, DISABLED_DebugPrintBacktrace) {
+TEST_F(StackTraceTest, DebugPrintBacktrace) {
   StackTrace().Print();
 }
 #endif  // !defined(__UCLIBC__)