Add full frame measurement mode for some blink_perf tests

tools/telemetry/telemetry/page/page_test.py

Index: tools/telemetry/telemetry/page/page_test.py
diff --git a/tools/telemetry/telemetry/page/page_test.py b/tools/telemetry/telemetry/page/page_test.py
index 28282024440946b9755f4930d6df609739af779b..8ba2b1270137abe65d701c7931a42758dd1844f4 100644
--- a/tools/telemetry/telemetry/page/page_test.py
+++ b/tools/telemetry/telemetry/page/page_test.py
@@ -169,6 +169,9 @@ class PageTest(command_line.Command):
     """
     return False
 
+  def CustomizeFinderOptions(self, options):
+    """Override to set test-specific options to find the browser"""
+
   def CustomizeBrowserOptions(self, options):
     """Override to add test-specific options to the BrowserOptions object"""