Re-implement app overlap detection with new extent syntax.

chrome/common/extensions/extension_extent_unittest.cc

 // Copyright (c) 2010 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 "chrome/common/extensions/extension.h"
 
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 TEST(ExtensionExtentTest, Empty) {
@@ skipping 15 matching lines @@
 
 TEST(ExtensionExtentTest, Two) {
   ExtensionExtent extent;
   extent.AddPattern(*URLPattern::CreateFromString("http://www.google.com/*"));
   extent.AddPattern(*URLPattern::CreateFromString("http://www.yahoo.com/*"));
 
   EXPECT_TRUE(extent.ContainsURL(GURL("http://www.google.com/monkey")));
   EXPECT_TRUE(extent.ContainsURL(GURL("http://www.yahoo.com/monkey")));
   EXPECT_FALSE(extent.ContainsURL(GURL("https://www.apple.com/monkey")));
 }
+
+TEST(ExtensionExtentTest, OverlapsWith) {
+  ExtensionExtent extent1;
+  extent1.AddPattern(*URLPattern::CreateFromString("http://www.google.com/f*"));
+  extent1.AddPattern(*URLPattern::CreateFromString("http://www.yahoo.com/b*"));
+
+  ExtensionExtent extent2;
+  extent2.AddPattern(*URLPattern::CreateFromString("http://www.reddit.com/f*"));
+  extent2.AddPattern(*URLPattern::CreateFromString("http://www.yahoo.com/z*"));
+
+  ExtensionExtent extent3;
+  extent3.AddPattern(*URLPattern::CreateFromString(
+      "http://www.google.com/q/*"));
+  extent3.AddPattern(*URLPattern::CreateFromString("http://www.yahoo.com/b/*"));
+
+  EXPECT_FALSE(extent1.OverlapsWith(extent2));
+  EXPECT_FALSE(extent2.OverlapsWith(extent1));
+
+  EXPECT_TRUE(extent1.OverlapsWith(extent3));
+  EXPECT_TRUE(extent3.OverlapsWith(extent1));
+}