Rename key hit test cases

Rename page names in key hit test cases to be consistent with rendering
page sets

Bug: 847857
Change-Id: I8f67d1efe34218c01e1d7e3e4a57c6d08e0553d5
Reviewed-on: https://chromium-review.googlesource.com/1117441Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#570944}

tools/perf/page_sets/key_hit_test_cases.py

@@ -13,7 +13,8 @@ class PaperCalculatorHitTest(polymer.PolymerPage):
       # Generated from https://github.com/zqureshi/paper-calculator
       # vulcanize --inline --strip paper-calculator/demo.html
       url='file://key_hit_test_cases/paper-calculator-no-rendering.html',
-      page_set=page_set, run_no_page_interactions=False)
+      page_set=page_set, run_no_page_interactions=False,
+      name='paper_calculator_hit_test')
 
 
   def PerformPageInteractions(self, action_runner):