Revert of [WebViewLayoutTest] Fix potential rounding error in testBatteryApi() layout test.

android_webview/tools/WebViewShell/test/blink-apis/battery-status/battery-callback.html

Index: android_webview/tools/WebViewShell/test/blink-apis/battery-status/battery-callback.html
diff --git a/android_webview/tools/WebViewShell/test/blink-apis/battery-status/battery-callback.html b/android_webview/tools/WebViewShell/test/blink-apis/battery-status/battery-callback.html
index a85a3e499576296ef8c59d9d560254fb46224475..42f2ec39240549835fdd1529ae38ed97e57ab112 100644
--- a/android_webview/tools/WebViewShell/test/blink-apis/battery-status/battery-callback.html
+++ b/android_webview/tools/WebViewShell/test/blink-apis/battery-status/battery-callback.html
@@ -5,6 +5,13 @@
     <script type="text/javascript">
       description("Test Battery Status API callback in WebView");
       window.jsTestIsAsync = true;
+
+      function isInteger(value) {
+        if ((undefined === value) || (null === value)) {
+          return false;
+        }
+        return value % 1 == 0;
+      }
 
       var battery;
       function batteryStatusSuccess(batteryManager) {
@@ -15,7 +22,7 @@
         shouldBeGreaterThanOrEqual('battery.level', '0');
         shouldBeLessThanOrEqual('battery.level', '1');
         // Check that level has at most 2 significant digits
-        shouldBeTrue('battery.level.toPrecision(2) === battery.level.toString()');
+        shouldBeTrue('isInteger(battery.level * 100)');
         shouldBeTrue('!battery.charging || battery.dischargingTime === Infinity');
         shouldBeTrue('battery.charging || battery.chargingTime === Infinity');
         finishJSTest();
@@ -29,4 +36,4 @@
       navigator.getBattery().then(batteryStatusSuccess, batteryStatusFailure);
     </script>
   </body>
-</html>
+</html>