Add ink drop ripple (but no highlight) to comboboxes in harmony.

ui/views/controls/prefix_selector_unittest.cc

 // Copyright 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.
 
 #include "ui/views/controls/prefix_selector.h"
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/views/controls/prefix_delegate.h"
 #include "ui/views/test/views_test_base.h"
 
 using base::ASCIIToUTF16;
 
 namespace views {
 
-class TestPrefixDelegate : public PrefixDelegate {
+class TestPrefixDelegate : public View, public PrefixDelegate {
  public:
   TestPrefixDelegate() : selected_row_(0) {
     rows_.push_back(ASCIIToUTF16("aardvark"));
     rows_.push_back(ASCIIToUTF16("antelope"));
     rows_.push_back(ASCIIToUTF16("badger"));
     rows_.push_back(ASCIIToUTF16("gnu"));
   }
 
   ~TestPrefixDelegate() override {}
 
   int GetRowCount() override { return static_cast<int>(rows_.size()); }
 
   int GetSelectedRow() override { return selected_row_; }
 
   void SetSelectedRow(int row) override { selected_row_ = row; }
 
   base::string16 GetTextForRow(int row) override { return rows_[row]; }
 
  private:
   std::vector<base::string16> rows_;
   int selected_row_;
 
   DISALLOW_COPY_AND_ASSIGN(TestPrefixDelegate);
 };
 
 class PrefixSelectorTest : public ViewsTestBase {
  public:
   PrefixSelectorTest() {
-    selector_.reset(new PrefixSelector(&delegate_));
+    selector_.reset(new PrefixSelector(&delegate_, &delegate_));
   }
   ~PrefixSelectorTest() override {
     // Explicitly release |selector_| here which can happen before releasing
     // |delegate_|.
     selector_.reset();
   }
 
  protected:
   std::unique_ptr<PrefixSelector> selector_;
   TestPrefixDelegate delegate_;
 
  private:
-    DISALLOW_COPY_AND_ASSIGN(PrefixSelectorTest);
+  DISALLOW_COPY_AND_ASSIGN(PrefixSelectorTest);
 };
 
 TEST_F(PrefixSelectorTest, PrefixSelect) {
   selector_->InsertText(ASCIIToUTF16("an"));
   EXPECT_EQ(1, delegate_.GetSelectedRow());
 
   // Invoke OnViewBlur() to reset time.
   selector_->OnViewBlur();
   selector_->InsertText(ASCIIToUTF16("a"));
   EXPECT_EQ(0, delegate_.GetSelectedRow());
 
   selector_->OnViewBlur();
   selector_->InsertText(ASCIIToUTF16("g"));
   EXPECT_EQ(3, delegate_.GetSelectedRow());
 
   selector_->OnViewBlur();
   selector_->InsertText(ASCIIToUTF16("b"));
   selector_->InsertText(ASCIIToUTF16("a"));
   EXPECT_EQ(2, delegate_.GetSelectedRow());
 
   selector_->OnViewBlur();
   selector_->InsertText(ASCIIToUTF16("\t"));
   selector_->InsertText(ASCIIToUTF16("b"));
   selector_->InsertText(ASCIIToUTF16("a"));
   EXPECT_EQ(2, delegate_.GetSelectedRow());
 }
 
 }  // namespace views