Add ContextMenu support upstream for Android

chrome/android/testshell/java/src/org/chromium/chrome/testshell/TestShellTab.java

Index: chrome/android/testshell/java/src/org/chromium/chrome/testshell/TestShellTab.java
diff --git a/chrome/android/testshell/java/src/org/chromium/chrome/testshell/TestShellTab.java b/chrome/android/testshell/java/src/org/chromium/chrome/testshell/TestShellTab.java
index 846588fed3ac79139b0cd276693a7939e2485064..7953b7503b079a53684e5562f8597dacb5781c6b 100644
--- a/chrome/android/testshell/java/src/org/chromium/chrome/testshell/TestShellTab.java
+++ b/chrome/android/testshell/java/src/org/chromium/chrome/testshell/TestShellTab.java
@@ -8,6 +8,8 @@ import android.content.Context;
 import android.text.TextUtils;
 
 import org.chromium.chrome.browser.TabBase;
+import org.chromium.chrome.browser.contextmenu.ChromeContextMenuPopulator;
+import org.chromium.chrome.browser.contextmenu.ContextMenuPopulator;
 import org.chromium.chrome.browser.infobar.AutoLoginProcessor;
 import org.chromium.content.browser.ContentView;
 import org.chromium.content.browser.LoadUrlParams;
@@ -125,6 +127,15 @@ public class TestShellTab extends TabBase {
        };
     }
 
+    @Override
+    protected ContextMenuPopulator createContextMenuPopulator() {
+        return new ChromeContextMenuPopulator(new TabBaseChromeContextMenuItemDelegate() {
+            @Override
+            public void onOpenImageUrl(String url) {
+                loadUrlWithSanitization(url);
+            }
+        });
+    }
 
     private class TestShellTabBaseChromeWebContentsDelegateAndroid
             extends TabBaseChromeWebContentsDelegateAndroid {