Remove about:srcdoc url conversion.

chrome/android/java/src/org/chromium/chrome/browser/tab/TabWebContentsObserver.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.tab;
 
 import android.os.SystemClock;
 import android.support.annotation.IntDef;
 import android.view.View;
 
@@ skipping 167 matching lines @@
         auditor.notifyAuditEvent(mTab.getApplicationContext(), AuditEvent.OPEN_URL_FAILURE,
                 failingUrl, description);
         if (errorCode == BLOCKED_BY_ADMINISTRATOR) {
             auditor.notifyAuditEvent(
                     mTab.getApplicationContext(), AuditEvent.OPEN_URL_BLOCKED, failingUrl, "");
         }
     }
 
     @Override
     public void didStartProvisionalLoadForFrame(long frameId, long parentFrameId,
-            boolean isMainFrame, String validatedUrl, boolean isErrorPage,
-            boolean isIframeSrcdoc) {
+            boolean isMainFrame, String validatedUrl, boolean isErrorPage) {
         if (isMainFrame) mTab.didStartPageLoad(validatedUrl, isErrorPage);
 
         mTab.handleDidStartProvisionalLoadForFrame(isMainFrame, validatedUrl);
     }
 
     @Override
     public void didCommitProvisionalLoadForFrame(long frameId, boolean isMainFrame, String url,
             int transitionType) {
         if (isMainFrame && UmaUtils.isRunningApplicationStart()) {
             // Currently it takes about 2000ms to commit a navigation if the measurement
@@ skipping 108 matching lines @@
         }
     }
 
     @Override
     public void destroy() {
         MediaCaptureNotificationService.updateMediaNotificationForTab(
                 mTab.getApplicationContext(), mTab.getId(), 0, mTab.getUrl());
         super.destroy();
     }
 }