[Android WebView] Synthesize a fake page loading event on page source modification (Re-land)

content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java

Index: content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java b/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
index d6cb714f86af849bfea8bf5593f41e69eedc11f4..049e5af8d0ea21e9ed7813af43f522d757c165e0 100644
--- a/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
+++ b/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
@@ -166,6 +166,11 @@ import org.chromium.content_public.browser.WebContents;
     }
 
     @Override
+    public String getLastCommittedUrl() {
+        return nativeGetLastCommittedURL(mNativeWebContentsAndroid);
+    }
+
+    @Override
     public boolean isIncognito() {
         return nativeIsIncognito(mNativeWebContentsAndroid);
     }
@@ -296,6 +301,11 @@ import org.chromium.content_public.browser.WebContents;
         nativeAddMessageToDevToolsConsole(mNativeWebContentsAndroid, level, message);
     }
 
+    @Override
+    public boolean hasAccessedInitialDocument() {
+        return nativeHasAccessedInitialDocument(mNativeWebContentsAndroid);
+    }
+
     @CalledByNative
     private static void onEvaluateJavaScriptResult(
             String jsonResult, JavaScriptCallback callback) {
@@ -328,6 +338,7 @@ import org.chromium.content_public.browser.WebContents;
     private native void nativeScrollFocusedEditableNodeIntoView(long nativeWebContentsAndroid);
     private native void nativeSelectWordAroundCaret(long nativeWebContentsAndroid);
     private native String nativeGetURL(long nativeWebContentsAndroid);
+    private native String nativeGetLastCommittedURL(long nativeWebContentsAndroid);
     private native boolean nativeIsIncognito(long nativeWebContentsAndroid);
     private native void nativeResumeResponseDeferredAtStart(long nativeWebContentsAndroid);
     private native void nativeSetHasPendingNavigationTransitionForTesting(
@@ -347,4 +358,6 @@ import org.chromium.content_public.browser.WebContents;
             String script, JavaScriptCallback callback);
     private native void nativeAddMessageToDevToolsConsole(
             long nativeWebContentsAndroid, int level, String message);
+    private native boolean nativeHasAccessedInitialDocument(
+            long nativeWebContentsAndroid);
 }