Revert "Load web contents after tab is created."

This reverts commit 4c55f398def3214369aefa9f2f2e8f5940d3799d.

BUG=432562
TBR=tedchoc@chromium.org,jbudorick@chromium.org,sky@chromium.org

Review URL: https://codereview.chromium.org/894003005

Cr-Commit-Position: refs/heads/master@{#314469}
bool RegisterChromeWebContentsDelegateAndroid(JNIEnv* env) {
  return RegisterNativesImpl(env);
}

bool RegisterChromeWebContentsDelegateAndroid(JNIEnv* env) {
  return RegisterNativesImpl(env);
}
