Asserting screen is on for all content shell tests

content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestBase.java

Index: content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestBase.java
diff --git a/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestBase.java b/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestBase.java
index 7962ff713adfd819ff93a8b31b245facfa58e9b6..695da615dda3172e9c7fe42a7d5f43eaa3e43953 100644
--- a/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestBase.java
+++ b/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestBase.java
@@ -6,9 +6,13 @@ package org.chromium.content_shell_apk;
 
 import static org.chromium.base.test.util.ScalableTimeout.scaleTimeout;
 
+import android.annotation.TargetApi;
 import android.content.ComponentName;
+import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Build;
+import android.os.PowerManager;
 import android.text.TextUtils;
 import android.view.ViewGroup;
 
@@ -52,6 +56,24 @@ public class ContentShellTestBase
         super(ContentShellActivity.class);
     }
 
+    @Override
+    protected void setUp() throws Exception {
+        assertScreenIsOn();
+    }
+
+    @TargetApi(Build.VERSION_CODES.KITKAT_WATCH)
+    @SuppressWarnings("deprecation")
+    private void assertScreenIsOn() {
+        PowerManager pm = (PowerManager) getInstrumentation().getContext().getSystemService(
+                Context.POWER_SERVICE);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
+            assertTrue("Many tests will fail if the screen is not on.", pm.isInteractive());
+        } else {
+            assertTrue("Many tests will fail if the screen is not on.", pm.isScreenOn());
+        }
+    }
+
     /**
      * Starts the ContentShell activity and loads the given URL.
      * The URL can be null, in which case will default to ContentShellActivity.DEFAULT_SHELL_URL.