Get rid of page_set.FromDict from browsermark, canvasmark, dom_perf, html5gaming benchmarks.

tools/perf/benchmarks/browsermark.py

Index: tools/perf/benchmarks/browsermark.py
diff --git a/tools/perf/benchmarks/browsermark.py b/tools/perf/benchmarks/browsermark.py
index ac33464cfc65e0acc38afc70cb1a8d1262e25117..85953afece331bee70467aac5d9a355eb7a3b6d9 100644
--- a/tools/perf/benchmarks/browsermark.py
+++ b/tools/perf/benchmarks/browsermark.py
@@ -24,7 +24,6 @@ from telemetry import test
 from telemetry.page import page_measurement
 from telemetry.page import page_set
 
-
 class _BrowsermarkMeasurement(page_measurement.PageMeasurement):
 
   def MeasurePage(self, _, tab, results):
@@ -49,12 +48,9 @@ class Browsermark(test.Test):
   """Browsermark suite tests CSS, DOM, resize, page load, WebGL and JS."""
   test = _BrowsermarkMeasurement
   def CreatePageSet(self, options):
-    return page_set.PageSet.FromDict({
-        'archive_data_file': '../page_sets/data/browsermark.json',
-        'make_javascript_deterministic': False,
-        'pages': [
-          { 'url':
-              'http://browsermark.rightware.com/tests/'}
-           ]
-        }, os.path.abspath(__file__))
-
+    ps = page_set.PageSet(
+      file_path=os.path.abspath(__file__),
+      archive_data_file='../page_sets/data/browsermark.json',
+      make_javascript_deterministic=False)
+    ps.AddPageWithDefaultRunNavigate('http://browsermark.rightware.com/tests/')
+    return ps