[Android] Build android tools as PIE and add a wrapper for ICS

tools/telemetry/telemetry/core/platform/android_platform_backend.py

Index: tools/telemetry/telemetry/core/platform/android_platform_backend.py
diff --git a/tools/telemetry/telemetry/core/platform/android_platform_backend.py b/tools/telemetry/telemetry/core/platform/android_platform_backend.py
index d0ec854e32dc51968b566a2c9614021f33373f3a..235998f13a23705dec3c9ca063667aec97fdd433 100644
--- a/tools/telemetry/telemetry/core/platform/android_platform_backend.py
+++ b/tools/telemetry/telemetry/core/platform/android_platform_backend.py
@@ -144,11 +144,11 @@ class AndroidPlatformBackend(
     if not android_prebuilt_profiler_helper.InstallOnDevice(
         self._device, 'purge_ashmem'):
       raise Exception('Error installing purge_ashmem.')
-    if self._device.old_interface.RunShellCommand(
+    (status, output) = self._device.old_interface.GetAndroidToolStatusAndOutput(
         android_prebuilt_profiler_helper.GetDevicePath('purge_ashmem'),
-        log_result=True):
-      return
-    raise Exception('Error while purging ashmem.')
+        log_result=True)
+    if status != 0:
+      raise Exception('Error while purging ashmem: ' + '\n'.join(output))
 
   def GetMemoryStats(self, pid):
     memory_usage = self._device.old_interface.GetMemoryUsageForPid(pid)[0]