Fix for flaky MHTMLGenerationTest.ViewedMHTMLContainsNoStoreContentIfNoCacheControlPolicy test.

content/browser/download/mhtml_generation_browsertest.cc

 // Copyright (c) 2012 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 <stdint.h>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 46 matching lines @@
 
     return matches_;
   }
 
   void FindReply(WebContents* web_contents,
                  int request_id,
                  int number_of_matches,
                  const gfx::Rect& selection_rect,
                  int active_match_ordinal,
                  bool final_update) override {
-    matches_ = number_of_matches;
-    run_loop_.Quit();
+    if (final_update) {
+      matches_ = number_of_matches;
+      run_loop_.Quit();
+    }
   }
 
   static int global_request_id;
 
  private:
   std::string search_;
   int matches_;
   base::RunLoop run_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(FindTrackingDelegate);
@@ skipping 389 matching lines @@
 
   // Make sure that URLs of both frames are present
   // (note that these are single-line regexes).
   EXPECT_THAT(
       mhtml,
       ContainsRegex("Content-Location:.*/frame_tree/page_with_one_frame.html"));
   EXPECT_THAT(mhtml, ContainsRegex("Content-Location:.*/title1.html"));
 }
 
 }  // namespace content