Add temporary debug logging for crbug.com/639350.

chrome/test/base/interactive_test_utils.cc

Index: chrome/test/base/interactive_test_utils.cc
diff --git a/chrome/test/base/interactive_test_utils.cc b/chrome/test/base/interactive_test_utils.cc
index e6681fbc986f4a061530b043a1d33ae2b5586372..2a5fc6138b82c5cb9a45d094cf5e4635484d318c 100644
--- a/chrome/test/base/interactive_test_utils.cc
+++ b/chrome/test/base/interactive_test_utils.cc
@@ -10,6 +10,9 @@
 
 namespace ui_test_utils {
 
+// TODO(msw): Remove flaky test debug logging for http://crbug.com/639350.
+bool g_crbug_639350_logging = false;
+
 namespace {
 
 bool GetNativeWindow(const Browser* browser, gfx::NativeWindow* native_window) {
@@ -49,26 +52,40 @@ bool SendKeyPressToWindowSync(const gfx::NativeWindow window,
                               bool shift,
                               bool alt,
                               bool command) {
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 SendKeyPressToWindowSync A";
   scoped_refptr<content::MessageLoopRunner> runner =
       new content::MessageLoopRunner;
   bool result;
   result = ui_controls::SendKeyPressNotifyWhenDone(
       window, key, control, shift, alt, command, runner->QuitClosure());
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 SendKeyPressToWindowSync B";
 #if defined(OS_WIN)
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 SendKeyPressToWindowSync C";
   if (!result && ui_test_utils::ShowAndFocusNativeWindow(window)) {
+    if (g_crbug_639350_logging)
+      LOG(ERROR) << "crbug.com/639350 SendKeyPressToWindowSync D";
     result = ui_controls::SendKeyPressNotifyWhenDone(
         window, key, control, shift, alt, command, runner->QuitClosure());
   }
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 SendKeyPressToWindowSync E";
 #endif
   if (!result) {
     LOG(ERROR) << "ui_controls::SendKeyPressNotifyWhenDone failed";
     return false;
   }
 
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 SendKeyPressToWindowSync F: RUN RUNNER";
   // Run the message loop. It'll stop running when either the key was received
   // or the test timed out (in which case testing::Test::HasFatalFailure should
   // be set).
   runner->Run();
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 SendKeyPressToWindowSync G: RUNNER DONE";
   return !testing::Test::HasFatalFailure();
 }