Revert "[Android WebView] Terminate execution of stuck JS code on navigation requests"

android_webview/java/src/org/chromium/android_webview/AwContents.java

Index: android_webview/java/src/org/chromium/android_webview/AwContents.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwContents.java b/android_webview/java/src/org/chromium/android_webview/AwContents.java
index 6ad74c86b4bb892651b894f3d6074b21be1a57ba..63b400c378ff3aa39e8f9f4ee898cb813bdc59c9 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContents.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContents.java
@@ -1065,8 +1065,6 @@ public class AwContents {
      * @param params Parameters for this load.
      */
     public void loadUrl(LoadUrlParams params) {
-        if (mNativeAwContents == 0) return;
-
         if (params.getLoadUrlType() == LoadUrlParams.LOAD_TYPE_DATA &&
                 !params.isBaseUrlDataScheme()) {
             // This allows data URLs with a non-data base URL access to file:///android_asset/ and
@@ -1105,11 +1103,12 @@ public class AwContents {
             }
         }
 
-        nativeSetExtraHeadersForUrl(
-                mNativeAwContents, params.getUrl(), params.getExtraHttpRequestHeadersString());
+        if (mNativeAwContents != 0) {
+            nativeSetExtraHeadersForUrl(
+                    mNativeAwContents, params.getUrl(), params.getExtraHttpRequestHeadersString());
+        }
         params.setExtraHeaders(new HashMap<String, String>());
 
-        nativeSendCheckRenderThreadResponsiveness(mNativeAwContents);
         mContentViewCore.loadUrl(params);
 
         // The behavior of WebViewClassic uses the populateVisitedLinks callback in WebKit.
@@ -2497,7 +2496,6 @@ public class AwContents {
     private native void nativeClearView(long nativeAwContents);
     private native void nativeSetExtraHeadersForUrl(long nativeAwContents,
             String url, String extraHeaders);
-    private native void nativeSendCheckRenderThreadResponsiveness(long nativeAwContents);
 
     private native void nativeInvokeGeolocationCallback(
             long nativeAwContents, boolean value, String requestingFrame);