[Telemetry] Print out console output instead of page state on TimeoutException

telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py

Index: telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py
diff --git a/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py b/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py
index e74ddcec9999e68ea70499e8943394fa19de0355..29ddf87bc89d16fc761214b5bf0425cc9be6bbd5 100644
--- a/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py
+++ b/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py
@@ -170,6 +170,12 @@ class InspectorBackend(object):
   def GetCookieByName(self, name, timeout):
     return self._page.GetCookieByName(name, timeout)
 
+  # Console public methods.
+
+  @_HandleInspectorWebSocketExceptions
+  def GetCurrentConsoleOutputBuffer(self, timeout=10):
+    return self._console.GetCurrentConsoleOutputBuffer(timeout)
+
   # Runtime public methods.
 
   @_HandleInspectorWebSocketExceptions