[WebLayer] Don't log non-fatal exception

This exception may happen when trying to notify WebView we are running
in-process, but it is fine to ignore.

Change-Id: Id9b17ab8cbad42a28559dbb505ef403e8d1105e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2343227
Commit-Queue: Clark DuVall <cduvall@chromium.org>
Commit-Queue: Richard Coles <torne@chromium.org>
Auto-Submit: Clark DuVall <cduvall@chromium.org>
Reviewed-by: Richard Coles <torne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#796003}

weblayer/browser/java/org/chromium/weblayer_private/WebLayerImpl.java

@@ -703,7 +703,7 @@ public final class WebLayerImpl extends IWebLayer.Stub {
                     "setWebLayerRunningInSameProcess");
             setter.invoke(null);
         } catch (Exception e) {
-            Log.w(TAG, "Unable to notify WebView running in process", e);
+            Log.w(TAG, "Unable to notify WebView running in process.");
         }
     }