Refactor all video related processing to its own class

tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py

Index: tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
diff --git a/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py b/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
index 8217d00d23f0345e641d1b416fcebf645fc153bb..3a47b315e9dc220b42dffbbf1d139683d5625446 100644
--- a/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
+++ b/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
@@ -2,13 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import logging
-import os
 import unittest
 
 from telemetry import test
-from telemetry.core import bitmap
-from telemetry.core import util
 from telemetry.core.platform import android_platform_backend
 from telemetry.unittest import system_stub
 
@@ -70,34 +66,3 @@ class AndroidPlatformBackendTest(unittest.TestCase):
     cpu_stats = backend.GetCpuStats('7702')
     self.assertEquals(cpu_stats, {})
 
-  @test.Disabled
-  def testFramesFromMp4(self):
-    mock_adb = MockDevice(MockAdbCommands([]))
-    backend = android_platform_backend.AndroidPlatformBackend(mock_adb, False)
-
-    try:
-      backend.InstallApplication('avconv')
-    finally:
-      if not backend.CanLaunchApplication('avconv'):
-        logging.warning('Test not supported on this platform')
-        return  # pylint: disable=W0150
-
-    vid = os.path.join(util.GetUnittestDataDir(), 'vid.mp4')
-    expected_timestamps = [
-      0,
-      763,
-      783,
-      940,
-      1715,
-      1732,
-      1842,
-      1926,
-      ]
-
-    # pylint: disable=W0212
-    for i, timestamp_bitmap in enumerate(backend._FramesFromMp4(vid)):
-      timestamp, bmp = timestamp_bitmap
-      self.assertEquals(timestamp, expected_timestamps[i])
-      expected_bitmap = bitmap.Bitmap.FromPngFile(os.path.join(
-          util.GetUnittestDataDir(), 'frame%d.png' % i))
-      self.assertTrue(expected_bitmap.IsEqual(bmp))