Increasing number of missing classes shown by bytecode validator

This warning message doesn't flood the screen like we feared it might.
Increase this message size so it's more usable when importing new
libraries.

Change-Id: Ie3d2424e2763ac5aa7b969a3baafb66dd3c9a450
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2535932
Commit-Queue: Sam Maier <smaier@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Auto-Submit: Sam Maier <smaier@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827047}

build/android/bytecode/java/org/chromium/bytecode/ClassPathValidator.java

@@ -23,7 +23,7 @@ import java.util.function.Consumer;
  */
 public class ClassPathValidator {
     // Number of warnings to print.
-    private static final int MAX_MISSING_CLASS_WARNINGS = 4;
+    private static final int MAX_MISSING_CLASS_WARNINGS = 10;
     // Number of missing classes to show per missing jar.
     private static final int MAX_ERRORS_PER_JAR = 2;
     // Map of missing .jar -> Missing class -> Classes that failed.