resource: Remove Timer usages from SVGImageChromeClient

This is part of efforts to replace default timer task runners with
other appropriate task runners in the renderer.

Bug: 624694, 804694
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: Id745eed43a86ce079fd870586ce6169b928ba1dd
Reviewed-on: https://chromium-review.googlesource.com/917884Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536744}

third_party/WebKit/Source/core/svg/graphics/SVGImageChromeClient.cpp

@@ -30,6 +30,7 @@
 
 #include "core/svg/graphics/SVGImage.h"
 #include "platform/graphics/ImageObserver.h"
+#include "platform/scheduler/child/web_scheduler.h"
 #include "platform/wtf/Time.h"
 
 namespace blink {
@@ -38,9 +39,14 @@ static const double kAnimationFrameDelay = 1.0 / 60;
 
 SVGImageChromeClient::SVGImageChromeClient(SVGImage* image)
     : image_(image),
-      animation_timer_(WTF::WrapUnique(new Timer<SVGImageChromeClient>(
-          this,
-          &SVGImageChromeClient::AnimationTimerFired))),
+      animation_timer_(
+          WTF::WrapUnique(new TaskRunnerTimer<SVGImageChromeClient>(
+              blink::Platform::Current()
+                  ->CurrentThread()
+                  ->Scheduler()
+                  ->CompositorTaskRunner(),
+              this,
+              &SVGImageChromeClient::AnimationTimerFired))),
       timeline_state_(kRunning) {}
 
 SVGImageChromeClient* SVGImageChromeClient::Create(SVGImage* image) {