Add "Share" option back to context menu for images.

  Bug: 5904671

Change-Id: Id5b26035ddc8c04decc5f43ae4b859b396839a82
diff --git a/src/com/android/browser/Controller.java b/src/com/android/browser/Controller.java
index 0b49aff..9861184 100644
--- a/src/com/android/browser/Controller.java
+++ b/src/com/android/browser/Controller.java
@@ -1403,8 +1403,20 @@
                 }
                 // otherwise fall through to handle image part
             case WebView.HitTestResult.IMAGE_TYPE:
+                MenuItem shareItem = menu.findItem(R.id.share_link_context_menu_id);
+                shareItem.setVisible(type == WebView.HitTestResult.IMAGE_TYPE);
                 if (type == WebView.HitTestResult.IMAGE_TYPE) {
                     menu.setHeaderTitle(extra);
+                    shareItem.setOnMenuItemClickListener(
+                            new MenuItem.OnMenuItemClickListener() {
+                                @Override
+                                public boolean onMenuItemClick(MenuItem item) {
+                                    sharePage(mActivity, null, extra, null,
+                                    null);
+                                    return true;
+                                }
+                            }
+                        );
                 }
                 menu.findItem(R.id.view_image_context_menu_id)
                         .setOnMenuItemClickListener(new OnMenuItemClickListener() {