Disable Find-In-Page buttons when no text is entered

chrome/browser/ui/views/find_bar_view.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 "chrome/browser/ui/views/find_bar_view.h"
 
 #include <algorithm>
 
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 587 matching lines @@
     // sent for a lot more things than just the user nulling out the search
     // terms. See http://crbug.com/45372.
     Profile* profile =
         Profile::FromBrowserContext(web_contents->GetBrowserContext());
     FindBarState* find_bar_state = FindBarStateFactory::GetForProfile(profile);
     find_bar_state->set_last_prepopulate_text(base::string16());
   }
 }
 
 void FindBarView::UpdateMatchCountAppearance(bool no_match) {
-  // Enable the buttons if there is a match or if there is a match count text
-  // set (from a prepopulated view).
-  bool enable_buttons = !match_count_text_->text().empty() || !no_match;
+  bool enable_buttons = !match_count_text_->text().empty() && !no_match;
   find_previous_button_->SetEnabled(enable_buttons);
   find_next_button_->SetEnabled(enable_buttons);
 
   if (ui::MaterialDesignController::IsModeMaterial())
     return;
 
   if (no_match) {
     match_count_text_->SetBackgroundColor(kBackgroundColorNoMatch);
     match_count_text_->SetEnabledColor(kTextColorNoMatch);
   } else {
@@ skipping 42 matching lines @@
   SkColor text_color =
       theme->GetSystemColor(ui::NativeTheme::kColorId_TextfieldDefaultColor);
   match_count_text_->SetEnabledColor(SkColorSetA(text_color, 0x69));
   separator_->SetColor(SkColorSetA(text_color, 0x26));
 }
 
 SkColor FindBarView::GetTextColorForIcon() {
   return GetNativeTheme()->GetSystemColor(
       ui::NativeTheme::kColorId_TextfieldDefaultColor);
 }