Introduce Animated Logo to Chrome on Android

components/search_provider_logos/animated_logo_tracker.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 "components/search_provider_logos/animated_logo_tracker.h"
+#include "net/url_request/url_fetcher.h"
+#include "net/url_request/url_request_context_getter.h"
+#include "net/url_request/url_request_status.h"
+
+namespace search_provider_logos {
+
+AnimatedLogoTracker::AnimatedLogoTracker(
+    scoped_refptr<net::URLRequestContextGetter> request_context_getter)
+    : request_context_getter_(request_context_getter) {}
+
+AnimatedLogoTracker::~AnimatedLogoTracker() {
+  ReturnToIdle();
+}
+
+void AnimatedLogoTracker::GetAnimatedLogo(const GURL& animated_logo_url,
+                       AnimatedLogoCallback listener) {
+  DCHECK(!animated_logo_url.is_empty());
+  animated_logo_callback_ = listener;
+  fetcher_ =

[newt (away), 2015/09/18 20:46:03]

resetting fetcher_ will abort any currently in-progress download. probably not
what you want.

+      net::URLFetcher::Create(animated_logo_url, net::URLFetcher::GET, this);
+  fetcher_->SetRequestContext(request_context_getter_.get());
+  fetcher_->Start();
+}
+
+void AnimatedLogoTracker::ReturnToIdle() {
+  fetcher_.reset();
+  animated_logo_callback_.Reset();
+}
+
+void AnimatedLogoTracker::OnURLFetchComplete(const net::URLFetcher* source) {
+  if (!source->GetStatus().is_success() || (source->GetResponseCode() != 200)) {
+    ReturnToIdle();
+    return;
+  }
+  std::string raw_response;
+  source->GetResponseAsString(&raw_response);
+  animated_logo_callback_.Run(raw_response);
+  ReturnToIdle();
+}
+
+} // namespace search_provider_logos