Make class lookup lazy in jni_generator when using lazy method lookup.

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 0f83b3220601f8aa4ae715d1bf757c1eb26c2d53..e8a27b946db09b0b32bc350d3c0924e19fdcf3a1 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -49,6 +49,8 @@ component("base") {
     "android/jni_registrar.h",
     "android/jni_string.cc",
     "android/jni_string.h",
+    "android/jni_utils.cc",
+    "android/jni_utils.h",
     "android/jni_weak_ref.cc",
     "android/jni_weak_ref.h",
     "android/library_loader/library_loader_hooks.cc",
@@ -1343,6 +1345,7 @@ if (is_android) {
       "android/java/src/org/chromium/base/EventLog.java",
       "android/java/src/org/chromium/base/FieldTrialList.java",
       "android/java/src/org/chromium/base/ImportantFileWriterAndroid.java",
+      "android/java/src/org/chromium/base/JNIUtils.java",
       "android/java/src/org/chromium/base/library_loader/LibraryLoader.java",
       "android/java/src/org/chromium/base/MemoryPressureListener.java",
       "android/java/src/org/chromium/base/JavaHandlerThread.java",