Android should be able to copy HTML snippets to the system clipboard.

ui/android/java/src/org/chromium/ui/Clipboard.java

 // Copyright (c) 2013 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.ui;
 
 import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
 
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
+import android.os.Build;
 import android.text.TextUtils;
 
 /**
  * Simple proxy that provides C++ code with an access pathway to the Android
  * clipboard.
  */
 @JNINamespace("ui")
 public class Clipboard {
     // Necessary for coercing clipboard contents to text if they require
     // access to network resources, etceteras (e.g., URI in clipboard)
@@ skipping 60 matching lines @@
      *
      * @param text will become the content of the clipboard's primary clip
      */
     @SuppressWarnings("javadoc")
     @CalledByNative
     private void setText(final String text) {
         mClipboardManager.setPrimaryClip(ClipData.newPlainText(null, text));
     }
 
     /**
+     * Writes HTML to the clipboard, together with a plain-text representation
+     * of that very data. This API is only available in Android JellyBean+ and
+     * will be a no-operation in older versions.
+     *
+     * @param html The HTML content to be pasted to the clipboard.
+     * @param text Plain-text representation of the HTML content.
+     */
+    @CalledByNative
+    private void setHTMLText(final String html, final String text) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+            mClipboardManager.setPrimaryClip(
+                    ClipData.newHtmlText(null, text, html));
+        }
+    }
+
+    /**
      * Approximates the behavior of the now-deprecated
      * {@link android.text.ClipboardManager#hasText()}, returning true if and
      * only if the clipboard has a primary clip and that clip contains a plain
      * non-empty text entry (without attempting coercion - URLs and intents
      * will cause this method to return false).
      *
      * @return as described above
      */
     @SuppressWarnings("javadoc")
     @CalledByNative
     private boolean hasPlainText() {
         final ClipData clip = mClipboardManager.getPrimaryClip();
         if (clip != null && clip.getItemCount() > 0) {
             final CharSequence text = clip.getItemAt(0).getText();
             return !TextUtils.isEmpty(text);
         }
         return false;
     }
 }