Removed cases that were taking too much power. Re-recorded html5 video and flash pages

BUG=

Review URL: https://codereview.chromium.org/554723004

Cr-Commit-Position: refs/heads/master@{#293932}

tools/perf/page_sets/data/tough_energy_cases.json

 {
     "description": "Describes the Web Page Replay archives for a page set. Don't edit by hand! Use record_wpr for updating.", 
     "archives": {
-        "tough_energy_cases_002.wpr": [
+        "tough_energy_cases_004.wpr": [
             "http://codepen.io/testificate364/debug/DLbxg", 
-            "https://mail.google.com/mail/", 
-            "http://codepen.io/testificate364/debug/lJAiH", 
-            "http://codepen.io/testificate364/debug/pgBHu", 
-            "http://codepen.io/testificate364/debug/eIutG", 
-            "http://codepen.io/testificate364/debug/paJhg", 
-            "http://codepen.io/testificate364/debug/zcDdv", 
-            "http://codepen.io/testificate364/debug/jetyn", 
-            "http://codepen.io/testificate364/debug/cFEaD", 
-            "http://codepen.io/testificate364/debug/zhgBD", 
-            "http://codepen.io/testificate364/debug/HdIgr", 
             "http://codepen.io/testificate364/debug/kFvpd", 
+            "http://codepen.io/testificate364/debug/Kvdxs", 
             "http://codepen.io/testificate364/debug/nrbDc", 
+            "http://codepen.io/testificate364/debug/lEhyw", 
+            "http://codepen.io/testificate364/debug/fhKCg", 
+            "http://codepen.io/testificate364/debug/HdIgr", 
+            "http://codepen.io/testificate364/debug/paJhg", 
+            "http://codepen.io/testificate364/debug/lJAiH", 
+            "http://codepen.io/testificate364/debug/jetyn", 
             "http://codepen.io/testificate364/debug/EFceH", 
-            "http://codepen.io/testificate364/debug/iwAfJ", 
             "http://codepen.io/testificate364/debug/yaosK", 
-            "http://codepen.io/testificate364/debug/fhKCg", 
-            "http://codepen.io/testificate364/debug/Kvdxs", 
-            "http://codepen.io/testificate364/debug/ckItK", 
-            "http://codepen.io/testificate364/debug/lEhyw"
+            "https://mail.google.com/mail/", 
+            "http://codepen.io/testificate364/debug/zhgBD", 
+            "http://codepen.io/testificate364/debug/slBue"
         ]
     }
-}
+}
\ No newline at end of file

tools/perf/page_sets/data/tough_energy_cases_004.wpr.sha1

+314d0c0f8174833beae8590274ac2f0e2437a4a0
\ No newline at end of file

tools/perf/page_sets/tough_energy_cases.py

@@ -45,13 +45,15 @@ class ToughEnergyCasesPageSet(page_set_module.PageSet):
     # Why: productivity, top google properties
     self.AddPage(GooglePage('https://mail.google.com/mail/', self))
 
+    # Disabled: pegs CPU too much to get meaningful results.
     # Why: Image constantly changed in the background, above the fold
-    self.AddPage(CodePenPage(
-        'http://codepen.io/testificate364/debug/eIutG', self))
+    # self.AddPage(CodePenPage(
+    #     'http://codepen.io/testificate364/debug/eIutG', self))
 
+    # Disabled: pegs CPU too much to get meaningful results.
     # Why: Image constantly changed in the background, below the fold
-    self.AddPage(CodePenPage(
-        'http://codepen.io/testificate364/debug/zcDdv', self))
+    # self.AddPage(CodePenPage(
+    #     'http://codepen.io/testificate364/debug/zcDdv', self))
 
     # Why: CSS Animation, above the fold
     self.AddPage(CodePenPage(
@@ -101,21 +103,24 @@ class ToughEnergyCasesPageSet(page_set_module.PageSet):
     self.AddPage(CodePenPage(
         'http://codepen.io/testificate364/debug/EFceH', self))
 
+    # Disabled: pegs CPU too much to get meaningful results.
     # Why: PostMessage between frames, above the fold
-    self.AddPage(CodePenPage(
-        'http://codepen.io/testificate364/debug/pgBHu', self))
+    # self.AddPage(CodePenPage(
+    #    'http://codepen.io/testificate364/debug/pgBHu', self))
 
+    # Disabled: pegs CPU too much to get meaningful results.
     # Why: Asynchronous XHR continually running
-    self.AddPage(CodePenPage(
-        'http://codepen.io/testificate364/debug/iwAfJ', self))
+    # self.AddPage(CodePenPage(
+    # 'http://codepen.io/testificate364/debug/iwAfJ', self))
 
+    # Disabled: pegs CPU too much to get meaningful results.
     # Why: Web Worker continually running
-    self.AddPage(CodePenPage(
-        'http://codepen.io/testificate364/debug/ckItK', self))
+    # self.AddPage(CodePenPage(
+    #     'http://codepen.io/testificate364/debug/ckItK', self))
 
     # Why: flash video
     self.AddPage(CodePenPage(
-        'http://codepen.io/testificate364/debug/cFEaD', self))
+        'http://codepen.io/testificate364/debug/slBue', self))
 
     # Why: Blank page in the foreground
     self.AddPage(CodePenPage(