Begun the DCHECK() cleanup. Starting off with /src/chrome/a* and /src/chrome/...

chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc

 // Copyright (c) 2011 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/autocomplete/autocomplete_edit_view_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
 #include <algorithm>
@@ skipping 877 matching lines @@
 
   autocomplete->EnableAccessibility();
 
   return autocomplete;
 }
 #endif
 
 void AutocompleteEditViewGtk::Observe(NotificationType type,
                                       const NotificationSource& source,
                                       const NotificationDetails& details) {
-  DCHECK(type == NotificationType::BROWSER_THEME_CHANGED);
+  DCHECK_EQ(type, NotificationType::BROWSER_THEME_CHANGED);
 
   SetBaseColor();
 }
 
 void AutocompleteEditViewGtk::AnimationEnded(const ui::Animation* animation) {
   controller_->OnCommitSuggestedText(false);
 }
 
 void AutocompleteEditViewGtk::AnimationProgressed(
     const ui::Animation* animation) {
@@ skipping 1382 matching lines @@
   // baseline, so we need to move the |instant_view_| down to make sure it
   // has the same baseline as the |text_view_|.
   PangoLayout* layout = gtk_label_get_layout(GTK_LABEL(instant_view_));
   int height;
   pango_layout_get_size(layout, NULL, &height);
   PangoLayoutIter* iter = pango_layout_get_iter(layout);
   int baseline = pango_layout_iter_get_baseline(iter);
   pango_layout_iter_free(iter);
   g_object_set(instant_anchor_tag_, "rise", baseline - height, NULL);
 }