Support clipboardData.getData() for Android

ui/base/clipboard/clipboard_android.cc

Index: ui/base/clipboard/clipboard_android.cc
diff --git a/ui/base/clipboard/clipboard_android.cc b/ui/base/clipboard/clipboard_android.cc
index d4a6548c5ae74a21ec1e1aa571434415bf42f96c..54ba6710a811105af5b6b76bb904d99d92a89af6 100644
--- a/ui/base/clipboard/clipboard_android.cc
+++ b/ui/base/clipboard/clipboard_android.cc
@@ -315,9 +315,13 @@ void ClipboardAndroid::ReadAvailableTypes(ClipboardType type,
     return;
   }
 
-  NOTIMPLEMENTED();
-
   types->clear();
+
+  if (IsFormatAvailable(GetPlainTextFormatType(), type))
+    types->push_back(base::UTF8ToUTF16(kMimeTypeText));
+  if (IsFormatAvailable(GetHtmlFormatType(), type))
+    types->push_back(base::UTF8ToUTF16(kMimeTypeHTML));
+
   *contains_filenames = false;
 }