[Android] Switch KillAll, StartActivity, and BroadcastIntent to DeviceUtils.

tools/telemetry/telemetry/core/platform/profiler/android_profiling_helper.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import glob
 import hashlib
 import logging
 import os
 import platform
 import re
@@ skipping 23 matching lines @@
 
 def _ElfSectionMd5Sum(elf_file, section):
   result = subprocess.check_output(
       'readelf -p%s "%s" | md5sum' % (section, elf_file), shell=True)
   return result.split(' ', 1)[0]
 
 
 def _FindMatchingUnstrippedLibraryOnHost(device, lib):
   lib_base = os.path.basename(lib)
 
-  device_md5 = device.RunShellCommand('md5 "%s"' % lib, root=True)[0]
+  device_md5 = device.RunShellCommand('md5 "%s"' % lib, as_root=True)[0]
   device_md5 = device_md5.split(' ', 1)[0]
 
   def FindMatchingStrippedLibrary(out_path):
     # First find a matching stripped library on the host. This avoids the need
     # to pull the stripped library from the device, which can take tens of
     # seconds.
     host_lib_pattern = os.path.join(out_path, '*_apk', 'libs', '*', lib_base)
     for stripped_host_lib in glob.glob(host_lib_pattern):
       with open(stripped_host_lib) as f:
         host_md5 = hashlib.md5(f.read()).hexdigest()
@@ skipping 196 matching lines @@
     return None
   toolchain_version = toolchain_version.group(1)
 
   path = os.path.join(util.GetChromiumSrcDir(), 'third_party', 'android_tools',
                       'ndk', 'toolchains',
                       '%s-%s' % (toolchain_config, toolchain_version),
                       'prebuilt', '%s-%s' % (host_os, host_machine), 'bin',
                       '%s-%s' % (toolchain_config, binary_name))
   path = os.path.abspath(path)
   return path if os.path.exists(path) else None