Convert Devtools Uses of base::RepeatingCallback<>::Equals to Use == or !=

BUG=937566

Change-Id: I412c5e383e454e375ba3b10fcec05058b7347422
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1644319Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Robert Liao <robliao@chromium.org>
Auto-Submit: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666340}

chrome/browser/devtools/devtools_window.cc

@@ -398,7 +398,7 @@ void DevToolsWindow::AddCreationCallbackForTest(
 void DevToolsWindow::RemoveCreationCallbackForTest(
     const CreationCallback& callback) {
   for (size_t i = 0; i < g_creation_callbacks.Get().size(); ++i) {
-    if (g_creation_callbacks.Get().at(i).Equals(callback)) {
+    if (g_creation_callbacks.Get().at(i) == callback) {
       g_creation_callbacks.Get().erase(g_creation_callbacks.Get().begin() + i);
       return;
     }