[Android] Generate html file for test runner trace instead of json.

build/android/pylib/__init__.py

Index: build/android/pylib/__init__.py
diff --git a/build/android/pylib/__init__.py b/build/android/pylib/__init__.py
index 5dc2d761da51bbd0959d8aa8d26775b0907dbb09..851e9c07b4fdd9483fa20d0ba0978429028f31e6 100644
--- a/build/android/pylib/__init__.py
+++ b/build/android/pylib/__init__.py
@@ -13,8 +13,15 @@ _PYTRACE_PATH = os.path.abspath(os.path.join(
     os.path.dirname(__file__), '..', '..', '..', 'third_party', 'catapult',
     'common', 'py_trace_event'))
 
+_TRACE2HTML_PATH = os.path.abspath(os.path.join(
+    os.path.dirname(__file__), '..', '..', '..', 'third_party', 'catapult',
+    'tracing'))
+
 if _DEVIL_PATH not in sys.path:
   sys.path.append(_DEVIL_PATH)
 
 if _PYTRACE_PATH not in sys.path:
   sys.path.append(_PYTRACE_PATH)
+
+if _TRACE2HTML_PATH not in sys.path:
+  sys.path.append(_TRACE2HTML_PATH)