[WebView Support Library] WebView.getLooper -> WebView.getWebViewLooper

We added the API WebView.getLooper() in P but want to rename it to
WebView.getWebViewLooper(). This CL replaces calls to
WebView.getLooper() in the support library with
WebView.getWebViewLooper().

Bug: 74831609
Test: run androidx.webkit tests.
Change-Id: Iae646f8d2bd5f769895fe493b3149a45fb6f42d4
diff --git a/webkit/src/main/java/androidx/webkit/WebViewCompat.java b/webkit/src/main/java/androidx/webkit/WebViewCompat.java
index bdd53c7..88de335 100644
--- a/webkit/src/main/java/androidx/webkit/WebViewCompat.java
+++ b/webkit/src/main/java/androidx/webkit/WebViewCompat.java
@@ -318,7 +318,7 @@
     @SuppressWarnings("NewApi")
     private static void checkThread(WebView webview) {
         if (BuildCompat.isAtLeastP()) {
-            if (webview.getLooper() != Looper.myLooper()) {
+            if (webview.getWebViewLooper() != Looper.myLooper()) {
                 throw new RuntimeException("A WebView method was called on thread '"
                         + Thread.currentThread().getName() + "'. "
                         + "All WebView methods must be called on the same thread. "