Throttle rendering pipeline for invisible frames

third_party/WebKit/Source/core/dom/DocumentLifecycle.cpp

Index: third_party/WebKit/Source/core/dom/DocumentLifecycle.cpp
diff --git a/third_party/WebKit/Source/core/dom/DocumentLifecycle.cpp b/third_party/WebKit/Source/core/dom/DocumentLifecycle.cpp
index efc1b4b99a161bf0e73e1faf24b2430f7a210383..331ccaa832cd364625f1331137b27b14b3aa9287 100644
--- a/third_party/WebKit/Source/core/dom/DocumentLifecycle.cpp
+++ b/third_party/WebKit/Source/core/dom/DocumentLifecycle.cpp
@@ -38,6 +38,10 @@ namespace blink {
 
 static DocumentLifecycle::DeprecatedTransition* s_deprecatedTransitionStack = 0;
 
+// TODO(skyostil): Come up with a better way to store cross-frame lifecycle
+// related data to avoid this being a global setting.
+static DocumentLifecycle::ThrottlingMode s_throttlingMode = DocumentLifecycle::ThrottlingMode::Allow;

[esprehn, 2015/10/14 22:09:46]

unsigned s_throttleCount

[Sami, 2015/10/16 16:48:08]

Done (made it s_throttlingDisallowCount since that's really what the scopes are
doing.)

+
 DocumentLifecycle::Scope::Scope(DocumentLifecycle& lifecycle, State finalState)
     : m_lifecycle(lifecycle)
     , m_finalState(finalState)
@@ -291,6 +295,16 @@ void DocumentLifecycle::ensureStateAtMost(State state)
     m_state = state;
 }
 
+void DocumentLifecycle::setThrottlingMode(ThrottlingMode throttlingMode)
+{
+    s_throttlingMode = throttlingMode;
+}
+
+DocumentLifecycle::ThrottlingMode DocumentLifecycle::throttlingMode() const
+{
+    return s_throttlingMode;
+}
+
 #if ENABLE(ASSERT)
 #define DEBUG_STRING_CASE(StateName) \
     case StateName: return #StateName