Round the scroll offset synced back to main instead of flooring.

android_webview/javatests/src/org/chromium/android_webview/test/AndroidScrollIntegrationTest.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/AndroidScrollIntegrationTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AndroidScrollIntegrationTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AndroidScrollIntegrationTest.java
index dc513fcc15017d9fd3d3c076902ff52409260769..9891d84a972a0377a1cc8f88209e66eb2e452487 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/AndroidScrollIntegrationTest.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AndroidScrollIntegrationTest.java
@@ -464,8 +464,8 @@ public class AndroidScrollIntegrationTest extends AwTestBase {
         // Make sure we can't hit these values simply as a result of scrolling.
         assert (maxScrollXPix % dragStepSize) != 0;
         assert (maxScrollYPix % dragStepSize) != 0;
-        final int maxScrollXCss = (int) Math.floor(maxScrollXPix / deviceDIPScale);
-        final int maxScrollYCss = (int) Math.floor(maxScrollYPix / deviceDIPScale);
+        final int maxScrollXCss = (int) Math.round(maxScrollXPix / deviceDIPScale);
+        final int maxScrollYCss = (int) Math.round(maxScrollYPix / deviceDIPScale);
 
         setMaxScrollOnMainSync(testContainerView, maxScrollXPix, maxScrollYPix);