Work around 'Text file busy' errors in android perf runner.

tools/run_perf.py

Index: tools/run_perf.py
diff --git a/tools/run_perf.py b/tools/run_perf.py
index a24627f0ec8834fd36367fdd14f3b68266cd3d5d..63c9148515c9380604bc2ee973fe3f0ddb27078e 100755
--- a/tools/run_perf.py
+++ b/tools/run_perf.py
@@ -539,6 +539,7 @@ class AndroidPlatform(Platform):  # pragma: no cover
         AndroidPlatform.DEVICE_DIR, "_tmp_", file_name)
     file_on_device = os.path.join(
         AndroidPlatform.DEVICE_DIR, target_rel, file_name)
+    folder_on_device = os.path.dirname(file_on_device)
 
     # Only push files not yet pushed in one execution.
     if file_on_host in self.pushed:
@@ -547,14 +548,15 @@ class AndroidPlatform(Platform):  # pragma: no cover
       self.pushed.add(file_on_host)
 
     # Work-around for "text file busy" errors. Push the files to a temporary
-    # location and then move them with a shell command.
+    # location and then copy them with a shell command.
     output = self._SendCommand(
         "push %s %s" % (file_on_host, file_on_device_tmp))
     # Success looks like this: "3035 KB/s (12512056 bytes in 4.025s)".
     # Errors look like this: "failed to copy  ... ".
     if output and not re.search('^[0-9]', output.splitlines()[-1]):
       logging.critical('PUSH FAILED: ' + output)
-    self._SendCommand("shell mv %s %s" % (file_on_device_tmp, file_on_device))
+    self._SendCommand("shell mkdir -p %s" % folder_on_device)
+    self._SendCommand("shell cp %s %s" % (file_on_device_tmp, file_on_device))
 
   def PreTests(self, node, path):
     suite_dir = os.path.abspath(os.path.dirname(path))