Browser testing: Run android content shell tests on hosts with multiple devices connected.

tools/bots/run_android_tests.sh

Index: tools/bots/run_android_tests.sh
===================================================================
--- tools/bots/run_android_tests.sh	(revision 39141)
+++ tools/bots/run_android_tests.sh	(working copy)
@@ -5,9 +5,9 @@
 
 # This script is meant to be run inside the src directory of a Dartium
 # (or Chromium) checkout, with android_tools installed in third_party.
-# It expects ContentShell to have been build for ARM android, using the
+# It expects ContentShell to have been built for ARM android, using the
 # ninja build system.
-# It expects a single android device to be connected by USB to the machine.
+# It expects one or more android devices to be connected by USB to the machine.
 set -v
 set -x
 cd src
@@ -17,17 +17,15 @@
 export PATH=$PATH:third_party/android_tools/sdk/platform-tools/\
 :third_party/android_tools/sdk/tools/
 
-adb uninstall org.chromium.content_shell_apk
-adb install -r $1
-./build/android/adb_reverse_forwarder.py 8081 8081 8082 8082 \
-                                         8083 8083 8084 8084 &
+./build/android/adb_reverse_forwarder.py --all-devices \
+    8081 8081 8082 8082 8083 8083 8084 8084 &
 FORWARDER_PID=$!
 sleep 15
 ./dart/tools/test.py -m release -a arm --progress=line --report --time \
     --failure-summary --write-debug-log --local_ip=localhost \
     --test_server_port=8083 --test_server_cross_origin_port=8084 \
     --test_driver_port=8081 --test_driver_error_port=8082 \
-    -r ContentShellOnAndroid
+    -r ContentShellOnAndroid --drt=$1
 EXIT_CODE=$?
 kill -9 $FORWARDER_PID
 exit $EXIT_CODE