svg: Replace Timer usages with TaskRunnerTimer in SVGImageTest

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: I16585f0cf479191f33fdac9a7afc924cd077b908
Reviewed-on: https://chromium-review.googlesource.com/897318
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533992}

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

@@ -15,6 +15,7 @@
 #include "platform/graphics/paint/PaintFlags.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "platform/wtf/PtrUtil.h"
+#include "public/platform/scheduler/test/renderer_scheduler_test_support.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/utils/SkNullCanvas.h"
@@ -93,8 +94,10 @@ TEST_F(SVGImageTest, TimelineSuspendAndResume) {
   const bool kShouldPause = true;
   Load(kAnimatedDocument, kShouldPause);
   SVGImageChromeClient& chrome_client = GetImage().ChromeClientForTesting();
-  Timer<SVGImageChromeClient>* timer = new Timer<SVGImageChromeClient>(
-      &chrome_client, &SVGImageChromeClient::AnimationTimerFired);
+  TaskRunnerTimer<SVGImageChromeClient>* timer =
+      new TaskRunnerTimer<SVGImageChromeClient>(
+          scheduler::GetSingleThreadTaskRunnerForTesting(), &chrome_client,
+          &SVGImageChromeClient::AnimationTimerFired);
   chrome_client.SetTimer(WTF::WrapUnique(timer));
 
   // Simulate a draw. Cause a frame (timer) to be scheduled.
@@ -120,8 +123,10 @@ TEST_F(SVGImageTest, ResetAnimation) {
   const bool kShouldPause = false;
   Load(kAnimatedDocument, kShouldPause);
   SVGImageChromeClient& chrome_client = GetImage().ChromeClientForTesting();
-  Timer<SVGImageChromeClient>* timer = new Timer<SVGImageChromeClient>(
-      &chrome_client, &SVGImageChromeClient::AnimationTimerFired);
+  TaskRunnerTimer<SVGImageChromeClient>* timer =
+      new TaskRunnerTimer<SVGImageChromeClient>(
+          scheduler::GetSingleThreadTaskRunnerForTesting(), &chrome_client,
+          &SVGImageChromeClient::AnimationTimerFired);
   chrome_client.SetTimer(WTF::WrapUnique(timer));
 
   // Simulate a draw. Cause a frame (timer) to be scheduled.