Android: support http referrers for context menu navigations.

chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ChromeContextMenuItemDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ChromeContextMenuItemDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ChromeContextMenuItemDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ChromeContextMenuItemDelegate.java
index e5b3210cb2df4f567aec14e9039fc68db3ec2209..391a842e85e73a6d91b3834f4842751d95cae127 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ChromeContextMenuItemDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ChromeContextMenuItemDelegate.java
@@ -5,7 +5,7 @@
 package org.chromium.chrome.browser.contextmenu;
 
 import org.chromium.chrome.browser.Tab;
-import org.chromium.content.browser.ContentView;
+import org.chromium.content_public.Referrer;
 
 /**
  * A delegate responsible for taking actions based on context menu selections.
@@ -39,7 +39,7 @@ public interface ChromeContextMenuItemDelegate {
      * the current {@link Tab}.
      * @param url The URL to open.
      */
-    void onOpenInNewTab(String url);
+    void onOpenInNewTab(String url, Referrer referrer);
 
     /**
      * Called when the {@code url} should be opened in a new incognito tab.
@@ -51,13 +51,13 @@ public interface ChromeContextMenuItemDelegate {
      * Called when the {@code url} is of an image and should be opened in the same tab.
      * @param url The image URL to open.
      */
-    void onOpenImageUrl(String url);
+    void onOpenImageUrl(String url, Referrer referrer);
 
     /**
      * Called when the {@code url} is of an image and should be opened in a new tab.
      * @param url The image URL to open.
      */
-    void onOpenImageInNewTab(String url);
+    void onOpenImageInNewTab(String url, Referrer referrer);
 
     /**
      * Called when the {@code text} should be saved to the clipboard.