Add multi-architecture support in telemetry.

tools/telemetry/telemetry/core/backends/adb_commands.py

Index: tools/telemetry/telemetry/core/backends/adb_commands.py
diff --git a/tools/telemetry/telemetry/core/backends/adb_commands.py b/tools/telemetry/telemetry/core/backends/adb_commands.py
index 5c722bd39761d84950119502fcd13fea52cf1c57..8bc9341b216bef4a0f51eac21fc0f081c4eecb5d 100644
--- a/tools/telemetry/telemetry/core/backends/adb_commands.py
+++ b/tools/telemetry/telemetry/core/backends/adb_commands.py
@@ -105,8 +105,8 @@ def SetupPrebuiltTools(adb):
   if platform.GetHostPlatform().GetOSName() == 'linux':
     host_tools.append('host_forwarder')
 
-  has_device_prebuilt = adb.device().GetProp('ro.product.cpu.abi').startswith(
-      'armeabi')
+  arch_name = adb.device().GetABI()
+  has_device_prebuilt = arch_name.startswith('armeabi')
   if not has_device_prebuilt:
     return all([support_binaries.FindLocallyBuiltPath(t) for t in device_tools])
 
@@ -124,7 +124,10 @@ def SetupPrebuiltTools(adb):
         os.makedirs(os.path.dirname(dest))
       platform_name = ('android' if t in device_tools else
                        platform.GetHostPlatform().GetOSName())
-      prebuilt_path = support_binaries.FindPath(executable, platform_name)
+      bin_arch_name = (arch_name if t in device_tools else
+                       platform.GetHostPlatform().GetArchName())
+      prebuilt_path = support_binaries.FindPath(
+          executable, bin_arch_name, platform_name)
       if not prebuilt_path or not os.path.exists(prebuilt_path):
         raise NotImplementedError("""
 %s must be checked into cloud storage.