Suppress frame requests in InputMethodController::textInputType()

third_party/WebKit/Source/core/page/PageAnimator.cpp

 // Copyright 2014 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 "core/page/PageAnimator.h"
 
 #include "core/animation/DocumentAnimations.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/Page.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "platform/instrumentation/tracing/TraceEvent.h"
 #include "wtf/AutoReset.h"
 
 namespace blink {
 
-PageAnimator::PageAnimator(Page& page)
-    : m_page(page),
-      m_servicingAnimations(false),
-      m_updatingLayoutAndStyleForPainting(false) {}
+PageAnimator::PageAnimator(Page& page) : m_page(page) {}
 
 PageAnimator* PageAnimator::create(Page& page) {
   return new PageAnimator(page);
 }
 
 DEFINE_TRACE(PageAnimator) {
   visitor->trace(m_page);
 }
 
 void PageAnimator::serviceScriptedAnimations(
     double monotonicAnimationStartTime) {
   AutoReset<bool> servicing(&m_servicingAnimations, true);
+  FrameRequestSuppressionScope suppressFrameRequests(this);
+
   clock().updateTime(monotonicAnimationStartTime);
 
   HeapVector<Member<Document>, 32> documents;
   for (Frame* frame = m_page->mainFrame(); frame;
        frame = frame->tree().traverseNext()) {
     if (frame->isLocalFrame())
       documents.push_back(toLocalFrame(frame)->document());
   }
 
   for (auto& document : documents) {
@@ skipping 24 matching lines @@
     }
     // TODO(skyostil): This function should not run for documents without views.
     DocumentLifecycle::DisallowThrottlingScope noThrottlingScope(
         document->lifecycle());
     document->serviceScriptedAnimations(monotonicAnimationStartTime);
   }
 }
 
 DISABLE_CFI_PERF
 void PageAnimator::scheduleVisualUpdate(LocalFrame* frame) {
-  if (m_servicingAnimations || m_updatingLayoutAndStyleForPainting)
+  if (m_frameRequestSuppressionDepth > 0) {
     return;
+  }
   m_page->chromeClient().scheduleAnimation(frame->view());
 }
 
 void PageAnimator::updateAllLifecyclePhases(LocalFrame& rootFrame) {
   FrameView* view = rootFrame.view();
-  AutoReset<bool> servicing(&m_updatingLayoutAndStyleForPainting, true);
+  FrameRequestSuppressionScope suppressFrameRequests(this);
+
   view->updateAllLifecyclePhases();
 }
 
+PageAnimator::FrameRequestSuppressionScope::FrameRequestSuppressionScope(
+    PageAnimator* pageAnimator)
+    : m_pageAnimator(pageAnimator) {
+  if (m_pageAnimator) {
+    m_pageAnimator->m_frameRequestSuppressionDepth++;
+  }
+}
+
+PageAnimator::FrameRequestSuppressionScope::~FrameRequestSuppressionScope() {
+  if (m_pageAnimator) {
+    m_pageAnimator->m_frameRequestSuppressionDepth--;
+  }
+}
+
 }  // namespace blink