[Telemetry] Add 'name' attribute for pages, which allows for more human-readable printing

tools/telemetry/telemetry/page/page_runner.py

Index: tools/telemetry/telemetry/page/page_runner.py
diff --git a/tools/telemetry/telemetry/page/page_runner.py b/tools/telemetry/telemetry/page/page_runner.py
index de0ebffc82bc9513000be2fd80347580a3260e2b..809437e6be5b9f92bd76eb783c7df0df7f31bc0e 100644
--- a/tools/telemetry/telemetry/page/page_runner.py
+++ b/tools/telemetry/telemetry/page/page_runner.py
@@ -98,7 +98,7 @@ class _RunState(object):
   def StartProfiling(self, page, finder_options):
     if not self.profiler_dir:
       self.profiler_dir = tempfile.mkdtemp()
-    output_file = os.path.join(self.profiler_dir, page.url_as_file_safe_name)
+    output_file = os.path.join(self.profiler_dir, page.file_safe_name)
     if finder_options.repeat_options.IsRepeating():
       output_file = _GetSequentialFileName(output_file)
     self.browser.StartProfiling(finder_options.profiler, output_file)