Add "previewing on hover" support for password field.

components/autofill/content/browser/content_autofill_driver_unittest.cc

 // Copyright 2014 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.
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 147 matching lines @@
     Tuple1<base::string16> autofill_param;
     switch (messageID) {
       case AutofillMsg_FillFieldWithValue::ID:
         if (!AutofillMsg_FillFieldWithValue::Read(message, &autofill_param))
           return false;
         break;
       case AutofillMsg_PreviewFieldWithValue::ID:
         if (!AutofillMsg_PreviewFieldWithValue::Read(message, &autofill_param))
           return false;
         break;
+      case AutofillMsg_PreviewPassword::ID:
+        if (!AutofillMsg_PreviewPassword::Read(message, &autofill_param))
+          return false;
+        break;
       case AutofillMsg_AcceptDataListSuggestion::ID:
         if (!AutofillMsg_AcceptDataListSuggestion::Read(message,
                                                         &autofill_param))
           return false;
         break;
       case AutofillMsg_AcceptPasswordAutofillSuggestion::ID:
         if (!AutofillMsg_AcceptPasswordAutofillSuggestion::Read(
                 message, &autofill_param))
           return false;
         break;
@@ skipping 149 matching lines @@
 TEST_F(ContentAutofillDriverTest, PreviewFieldWithValue) {
   base::string16 input_value(base::ASCIIToUTF16("barqux"));
   base::string16 output_value;
   driver_->RendererShouldPreviewFieldWithValue(input_value);
   EXPECT_TRUE(GetString16FromMessageWithID(
       AutofillMsg_PreviewFieldWithValue::ID,
       &output_value));
   EXPECT_EQ(input_value, output_value);
 }
 
+TEST_F(ContentAutofillDriverTest, PreviewPassword) {
+  base::string16 input_value(base::ASCIIToUTF16("barqux"));
+  base::string16 output_value;
+  driver_->RendererShouldPreviewPassword(input_value);
+  EXPECT_TRUE(GetString16FromMessageWithID(
+      AutofillMsg_PreviewPassword::ID, &output_value));
+  EXPECT_EQ(input_value, output_value);
+}
+
 }  // namespace autofill