Revert "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 715931da87a256153e7a7db149347f532a8a0559..db8d51d1234c0a3a5b09f1410e7aec7aef87797c 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.round(maxScrollXPix / deviceDIPScale);
-        final int maxScrollYCss = (int) Math.round(maxScrollYPix / deviceDIPScale);
+        final int maxScrollXCss = (int) Math.floor(maxScrollXPix / deviceDIPScale);
+        final int maxScrollYCss = (int) Math.floor(maxScrollYPix / deviceDIPScale);
 
         setMaxScrollOnMainSync(testContainerView, maxScrollXPix, maxScrollYPix);