cc: Fix error in initializing preferred frame rate.

TBR=sunnyps@chromium.org

Bug: 1114184
Change-Id: I4f4c328ff19df11d7abe3521934e7523a7871373
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2360497
Commit-Queue: Khushal <khushalsagar@chromium.org>
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Khushal <khushalsagar@chromium.org>
Auto-Submit: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798918}

cc/trees/layer_tree_host_impl.cc

@@ -2430,7 +2430,7 @@ viz::CompositorFrame LayerTreeHostImpl::GenerateCompositorFrame(
     // For now cap the interval assuming a 24fps video, which is likely the
     // lowest frame rate we'll see for a video that would also be acceptable to
     // the page.
-    double interval_in_seconds = 1 / 24;
+    double interval_in_seconds = 1.0 / 24.0;
     metadata.preferred_frame_interval =
         base::TimeDelta::FromSecondsD(interval_in_seconds);
   } else {