Clean up out/<target> directory in the end if extract_build.

build/android/buildbot/bb_run_bot.py

Index: build/android/buildbot/bb_run_bot.py
diff --git a/build/android/buildbot/bb_run_bot.py b/build/android/buildbot/bb_run_bot.py
index 878e36a92851c3ff789b0bf977038ea3719e83ca..7dbd2111588df2a5edb6df444cb6c30eef7eb6bd 100755
--- a/build/android/buildbot/bb_run_bot.py
+++ b/build/android/buildbot/bb_run_bot.py
@@ -144,8 +144,9 @@ def GetBotStepMap():
       B('main-clobber', H(compile_step)),
       B('main-tests-rel', H(std_test_steps),
         T(std_tests + telemetry_tests + chrome_proxy_tests,
-          [flakiness_server])),
-      B('main-tests', H(std_test_steps), T(std_tests, [flakiness_server])),
+          ['--cleanup', flakiness_server])),
+      B('main-tests', H(std_test_steps),
+        T(std_tests,['--cleanup', flakiness_server])),
 
       # Other waterfalls
       B('asan-builder-tests', H(compile_step,
@@ -153,7 +154,8 @@ def GetBotStepMap():
         T(std_tests, ['--asan', '--asan-symbolize'])),
       B('blink-try-builder', H(compile_step)),
       B('chromedriver-fyi-tests-dbg', H(std_test_steps),
-        T(['chromedriver'], ['--install=ChromeShell', '--skip-wipe'])),
+        T(['chromedriver'], ['--install=ChromeShell', '--skip-wipe',
+          '--cleanup'])),
       B('fyi-x86-builder-dbg',
         H(compile_step + std_host_tests, experimental, target_arch='x86')),
       B('fyi-builder-dbg',
@@ -164,7 +166,8 @@ def GetBotStepMap():
       B('fyi-builder-rel', H(std_build_steps,  experimental)),
       B('fyi-tests', H(std_test_steps),
         T(std_tests, ['--experimental', flakiness_server,
-                      '--coverage-bucket', CHROMIUM_COVERAGE_BUCKET])),
+                      '--coverage-bucket', CHROMIUM_COVERAGE_BUCKET,
+                      '--cleanup'])),
       B('fyi-component-builder-tests-dbg',
         H(compile_step, extra_gyp='component=shared_library'),
         T(std_tests, ['--experimental', flakiness_server])),
@@ -176,9 +179,9 @@ def GetBotStepMap():
         H(['bisect_perf_regression']),
         T([], ['--chrome-output-dir', bisect_chrome_output_dir])),
       B('perf-tests-rel', H(std_test_steps),
-        T([], ['--install=ChromeShell'])),
+        T([], ['--install=ChromeShell', '--cleanup'])),
       B('webkit-latest-webkit-tests', H(std_test_steps),
-        T(['webkit_layout', 'webkit'], ['--auto-reconnect'])),
+        T(['webkit_layout', 'webkit'], ['--cleanup', '--auto-reconnect'])),
       B('webkit-latest-contentshell', H(compile_step),
         T(['webkit_layout'], ['--auto-reconnect'])),
       B('builder-unit-tests', H(compile_step), T(['unit'])),
@@ -191,9 +194,9 @@ def GetBotStepMap():
           extra_gyp='include_tests=1 enable_tracing=1')),
       B('webrtc-chromium-tests', H(std_test_steps),
         T(['webrtc_chromium'],
-          [flakiness_server, '--gtest-filter=WebRtc*'])),
+          [flakiness_server, '--gtest-filter=WebRtc*', '--cleanup'])),
       B('webrtc-native-tests', H(std_test_steps),
-        T(['webrtc_native'], [flakiness_server])),
+        T(['webrtc_native'], ['--cleanup', flakiness_server])),
 
       # Generic builder config (for substring match).
       B('builder', H(std_build_steps)),