Move installation of ContentShell.

build/android/buildbot/bb_device_steps.py

Index: build/android/buildbot/bb_device_steps.py
diff --git a/build/android/buildbot/bb_device_steps.py b/build/android/buildbot/bb_device_steps.py
index 52bbbf8ee3a76b5f5323b647b80577a7009c07db..c418a576aaef6e1d391957d024da4cc33ff85086 100755
--- a/build/android/buildbot/bb_device_steps.py
+++ b/build/android/buildbot/bb_device_steps.py
@@ -456,10 +456,10 @@ def RunWebRTCNativeTests(options):
 
 
 def RunGPUTests(options):
-  InstallApk(options, INSTRUMENTATION_TESTS['ContentShell'], False)
-
-  bb_annotations.PrintNamedStep('gpu_tests')
   revision = _GetRevision(options)
+  builder_name = options.build_properties.get('buildername', 'noname')
+
+  bb_annotations.PrintNamedStep('pixel_tests')
   RunCmd(['content/test/gpu/run_gpu_test.py',
           'pixel',
           '--browser',
@@ -472,8 +472,7 @@ def RunGPUTests(options):
           '--os-type',
           'android',
           '--test-machine-name',
-          EscapeBuilderName(
-              options.build_properties.get('buildername', 'noname'))])
+          EscapeBuilderName(builder_name)])
 
   bb_annotations.PrintNamedStep('webgl_conformance_tests')
   RunCmd(['content/test/gpu/run_gpu_test.py',