Revert of Add {Will,Did}StartBrowser to record_wpr

tools/telemetry/telemetry/page/record_wpr.py

Index: tools/telemetry/telemetry/page/record_wpr.py
diff --git a/tools/telemetry/telemetry/page/record_wpr.py b/tools/telemetry/telemetry/page/record_wpr.py
index dc3da9305f5c1706bb8238814773029e787bd43b..c88df05518f3f5f2dced40aba8d93f29a0c5312f 100755
--- a/tools/telemetry/telemetry/page/record_wpr.py
+++ b/tools/telemetry/telemetry/page/record_wpr.py
@@ -38,14 +38,6 @@
   def DidNavigateToPage(self, page, tab):
     if self.page_test:
       self.page_test.DidNavigateToPage(page, tab)
-
-  def WillStartBrowser(self, browser):
-    if self.page_test:
-      self.page_test.WillStartBrowser(browser)
-
-  def DidStartBrowser(self, browser):
-    if self.page_test:
-      self.page_test.DidStartBrowser(browser)
 
   def WillRunActions(self, page, tab):
     if self.page_test:
@@ -141,10 +133,6 @@
   def options(self):
     return self._options
 
-  @property
-  def page_test(self):
-    return self._record_page_test.page_test if self._benchmark else None
-
   def _CreateOptions(self):
     options = browser_options.BrowserFinderOptions()
     options.browser_options.wpr_mode = wpr_modes.WPR_RECORD