Fix precision problem in TouchActionBrowserTest.

content/browser/renderer_host/input/touch_action_browsertest.cc

Index: content/browser/renderer_host/input/touch_action_browsertest.cc
diff --git a/content/browser/renderer_host/input/touch_action_browsertest.cc b/content/browser/renderer_host/input/touch_action_browsertest.cc
index b63e2f76487d043c24c227ec8fdc0f6291ccd37a..1c4a305e5af0ff8fdca97478b3d39c5d5ebfc5f1 100644
--- a/content/browser/renderer_host/input/touch_action_browsertest.cc
+++ b/content/browser/renderer_host/input/touch_action_browsertest.cc
@@ -165,7 +165,7 @@ class TouchActionBrowserTest : public ContentBrowserTest {
     // main thread was in a busy loop.
     while (wait_until_scrolled &&
            frame_watcher->LastMetadata().root_scroll_offset.y() <
-               distance.y()) {
+               (distance.y() / 2)) {
       frame_watcher->WaitFrames(1);
     }
 
@@ -175,7 +175,7 @@ class TouchActionBrowserTest : public ContentBrowserTest {
       return false;
 
     // Allow for 1px rounding inaccuracies for some screen sizes.
-    EXPECT_NEAR(distance.y(), scrollTop, 1);
+    EXPECT_LT(distance.y() / 2, scrollTop);
     return true;
   }