Serve offline page for online URL on disconnected or bad networks

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/TabDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/TabDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/TabDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/TabDelegate.java
index 6a0b6b2cd41d89f4742eaf789940101d3dbf3a17..6c48ef744d71f771c59465ac4d62d3c0185ebacd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/TabDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/TabDelegate.java
@@ -8,6 +8,8 @@ import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Bundle;
+import android.provider.Browser;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.ContextUtils;
@@ -25,6 +27,8 @@ import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.ui.base.PageTransition;
 
+import java.util.Map;
+
 /**
  * Asynchronously creates Tabs by creating/starting up Activities.
  */
@@ -131,6 +135,15 @@ public class TabDelegate extends TabCreator {
             intent.setComponent(componentName);
         }
 
+        Map<String, String> extraHeaders = asyncParams.getLoadUrlParams().getExtraHeaders();
+        if (extraHeaders != null && !extraHeaders.isEmpty()) {
+            Bundle bundle = new Bundle();
+            for (Map.Entry<String, String> header : extraHeaders.entrySet()) {
+                bundle.putString(header.getKey(), header.getValue());
+            }
+            intent.putExtra(Browser.EXTRA_HEADERS, bundle);
+        }
+
         intent.putExtra(IntentHandler.EXTRA_TAB_ID, assignedTabId);
         intent.putExtra(IntentHandler.EXTRA_OPEN_NEW_INCOGNITO_TAB, mIsIncognito);
         intent.putExtra(IntentHandler.EXTRA_PARENT_TAB_ID, parentId);