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allow_disabling_blink_scheduler_throttling_per_renderview.patch
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allow_disabling_blink_scheduler_throttling_per_renderview.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: deepak1556 <hop2deep@gmail.com>
Date: Mon, 18 May 2020 11:12:26 -0700
Subject: allow disabling blink scheduler throttling per RenderView
This allows us to disable throttling for hidden windows.
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 32df5050f5a66c4b4f0981d3777a3b5a4fac9629..d8d9982bc6bd6e472677707b326a5dafa9b7fcf5 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -660,6 +660,11 @@ void RenderViewHostImpl::SetBackgroundOpaque(bool opaque) {
GetWidget()->GetAssociatedFrameWidget()->SetBackgroundOpaque(opaque);
}
+void RenderViewHostImpl::SetSchedulerThrottling(bool allowed) {
+ if (auto& broadcast = GetAssociatedPageBroadcast())
+ broadcast->SetSchedulerThrottling(allowed);
+}
+
bool RenderViewHostImpl::IsMainFrameActive() {
return is_active();
}
diff --git a/content/browser/renderer_host/render_view_host_impl.h b/content/browser/renderer_host/render_view_host_impl.h
index a099eed10dd061994bff696519099c3ef7437a46..a1f1e9b55272e70b4acd5d1f1515fba7d91538fa 100644
--- a/content/browser/renderer_host/render_view_host_impl.h
+++ b/content/browser/renderer_host/render_view_host_impl.h
@@ -137,6 +137,7 @@ class CONTENT_EXPORT RenderViewHostImpl
bool IsRenderViewLive() const override;
void WriteIntoTrace(perfetto::TracedProto<TraceProto> context) const override;
+ void SetSchedulerThrottling(bool allowed) override;
void SendWebPreferencesToRenderer();
void SendRendererPreferencesToRenderer(
const blink::RendererPreferences& preferences);
diff --git a/content/public/browser/render_view_host.h b/content/public/browser/render_view_host.h
index a6fe708878eb9afba9a68e0be71ba2c0b2a84d7d..5cc81ceb44d0a8baee3ebcc63aa4137b1e9ef08e 100644
--- a/content/public/browser/render_view_host.h
+++ b/content/public/browser/render_view_host.h
@@ -80,6 +80,9 @@ class CONTENT_EXPORT RenderViewHost {
virtual void WriteIntoTrace(
perfetto::TracedProto<TraceProto> context) const = 0;
+ // Disable/Enable scheduler throttling.
+ virtual void SetSchedulerThrottling(bool allowed) = 0;
+
private:
// This interface should only be implemented inside content.
friend class RenderViewHostImpl;
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index fd145f0aa562d6b63fb1d3a8a9241ae1aa1ce7a0..54d30fb9db8b48b94abdb815c487f618f9bb6525 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -151,6 +151,8 @@ class CONTENT_EXPORT RenderViewImpl : public blink::WebViewClient,
static WindowOpenDisposition NavigationPolicyToDisposition(
blink::WebNavigationPolicy policy);
+ void OnSetSchedulerThrottling(bool allowed);
+
// ---------------------------------------------------------------------------
// ADDING NEW FUNCTIONS? Please keep private functions alphabetized and put
// it in the same order in the .cc file as it was in the header.
diff --git a/third_party/blink/public/mojom/page/page.mojom b/third_party/blink/public/mojom/page/page.mojom
index befd736a9cf362514b9a2ee475dc4a814c85a87b..24b2617f56673a3075697802cf5b574b0c766610 100644
--- a/third_party/blink/public/mojom/page/page.mojom
+++ b/third_party/blink/public/mojom/page/page.mojom
@@ -97,4 +97,7 @@ interface PageBroadcast {
// Sent to whole page, but should only be used by the main frame.
SetPageBaseBackgroundColor(skia.mojom.SkColor? color);
+
+ // Whether to enable the Renderer scheduler background throttling.
+ SetSchedulerThrottling(bool allowed);
};
diff --git a/third_party/blink/public/web/web_view.h b/third_party/blink/public/web/web_view.h
index a1427a6a95583ae853284b97cab77d577172e60e..4645764213c82e73532f7c61ed03f919f8241393 100644
--- a/third_party/blink/public/web/web_view.h
+++ b/third_party/blink/public/web/web_view.h
@@ -364,6 +364,7 @@ class WebView {
// Scheduling -----------------------------------------------------------
virtual PageScheduler* Scheduler() const = 0;
+ virtual void SetSchedulerThrottling(bool allowed) = 0;
// Visibility -----------------------------------------------------------
diff --git a/third_party/blink/renderer/core/exported/web_view_impl.cc b/third_party/blink/renderer/core/exported/web_view_impl.cc
index d7b5e40a26026b7f4640c2f405fadab4a800e267..b2a2e38397fdf3e9bb52c4532a1d14463ed4110d 100644
--- a/third_party/blink/renderer/core/exported/web_view_impl.cc
+++ b/third_party/blink/renderer/core/exported/web_view_impl.cc
@@ -3688,6 +3688,13 @@ PageScheduler* WebViewImpl::Scheduler() const {
return GetPage()->GetPageScheduler();
}
+void WebViewImpl::SetSchedulerThrottling(bool allowed) {
+ DCHECK(GetPage());
+ scheduler_throttling_allowed_ = allowed;
+ GetPage()->GetPageScheduler()->SetPageVisible(allowed ?
+ (GetVisibilityState() == mojom::blink::PageVisibilityState::kVisible) : true);
+}
+
void WebViewImpl::SetVisibilityState(
mojom::blink::PageVisibilityState visibility_state,
bool is_initial_state) {
@@ -3699,7 +3706,8 @@ void WebViewImpl::SetVisibilityState(
}
GetPage()->SetVisibilityState(visibility_state, is_initial_state);
GetPage()->GetPageScheduler()->SetPageVisible(
- visibility_state == mojom::blink::PageVisibilityState::kVisible);
+ scheduler_throttling_allowed_ ?
+ (visibility_state == mojom::blink::PageVisibilityState::kVisible) : true);
}
mojom::blink::PageVisibilityState WebViewImpl::GetVisibilityState() {
diff --git a/third_party/blink/renderer/core/exported/web_view_impl.h b/third_party/blink/renderer/core/exported/web_view_impl.h
index 08a54c62b7f4eeb6a8b0e0cb192723e1aecad915..1eeb122ac5db86c53d328a308dc2b7a4a5ca9fed 100644
--- a/third_party/blink/renderer/core/exported/web_view_impl.h
+++ b/third_party/blink/renderer/core/exported/web_view_impl.h
@@ -419,6 +419,7 @@ class CORE_EXPORT WebViewImpl final : public WebView,
LocalDOMWindow* PagePopupWindow() const;
PageScheduler* Scheduler() const override;
+ void SetSchedulerThrottling(bool allowed) override;
void SetVisibilityState(mojom::blink::PageVisibilityState visibility_state,
bool is_initial_state) override;
mojom::blink::PageVisibilityState GetVisibilityState() override;
@@ -854,6 +855,8 @@ class CORE_EXPORT WebViewImpl final : public WebView,
// If true, we send IPC messages when |preferred_size_| changes.
bool send_preferred_size_changes_ = false;
+ bool scheduler_throttling_allowed_ = true;
+
// Whether the preferred size may have changed and |UpdatePreferredSize| needs
// to be called.
bool needs_preferred_size_update_ = true;