Add "AllArticles" mode to Reader Mode heuristics

chrome/browser/dom_distiller/distillable_page_utils_browsertest.cc

 // Copyright 2015 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 <string.h>
 
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 185 matching lines @@
   }
   {
     testing::InSequence dummy;
     EXPECT_CALL(holder_, OnResult(false, false)).Times(1);
     EXPECT_CALL(holder_, OnResult(false, true))
         .WillOnce(testing::InvokeWithoutArgs(QuitSoon));
     NavigateAndWait(kNonArticlePath, 0);
   }
 }
 
+using DistillablePageUtilsBrowserTestAllArticles =
+    DistillablePageUtilsBrowserTestOption<kAllArticles>;
+
+IN_PROC_BROWSER_TEST_F(DistillablePageUtilsBrowserTestAllArticles,
+                       TestDelegate) {
+  const char* paths[] = {kSimpleArticlePath, kSimpleArticleIFramePath};
+  for (unsigned i = 0; i < sizeof(paths) / sizeof(paths[0]); ++i) {
+    testing::InSequence dummy;
+    EXPECT_CALL(holder_, OnResult(true, false)).Times(1);
+    EXPECT_CALL(holder_, OnResult(true, true))
+        .WillOnce(testing::InvokeWithoutArgs(QuitSoon));
+    NavigateAndWait(paths[i], 0);
+  }
+  {
+    testing::InSequence dummy;
+    EXPECT_CALL(holder_, OnResult(false, false)).Times(1);
+    EXPECT_CALL(holder_, OnResult(false, true))
+        .WillOnce(testing::InvokeWithoutArgs(QuitSoon));
+    NavigateAndWait(kNonArticlePath, 0);
+  }
+}
+
 }  // namespace dom_distiller