Revert 169371 "DevTools: defer styles delta calculation to until..."

trunk/Source/core/inspector/InspectorCSSAgent.cpp

Index: trunk/Source/core/inspector/InspectorCSSAgent.cpp
===================================================================
--- trunk/Source/core/inspector/InspectorCSSAgent.cpp	(revision 169387)
+++ trunk/Source/core/inspector/InspectorCSSAgent.cpp	(working copy)
@@ -431,22 +431,11 @@
         wasEnabled(nullptr);
 }
 
-void InspectorCSSAgent::flushPendingFrontendMessages()
-{
-    if (!m_invalidatedDocuments.size())
-        return;
-    HashSet<Document*> invalidatedDocuments;
-    m_invalidatedDocuments.swap(&invalidatedDocuments);
-    for (HashSet<Document*>::iterator it = invalidatedDocuments.begin(); it != invalidatedDocuments.end(); ++it)
-        updateActiveStyleSheets(*it, ExistingFrontendRefresh);
-}
-
 void InspectorCSSAgent::reset()
 {
     m_idToInspectorStyleSheet.clear();
     m_cssStyleSheetToInspectorStyleSheet.clear();
     m_documentToCSSStyleSheets.clear();
-    m_invalidatedDocuments.clear();
     m_nodeToInspectorStyleSheet.clear();
     m_documentToViaInspectorStyleSheet.clear();
     resetNonPersistentData();
@@ -530,8 +519,8 @@
 
 void InspectorCSSAgent::mediaQueryResultChanged()
 {
-    flushPendingFrontendMessages();
-    m_frontend->mediaQueryResultChanged();
+    if (m_frontend)
+        m_frontend->mediaQueryResultChanged();
 }
 
 void InspectorCSSAgent::willMutateRules()
@@ -572,9 +561,7 @@
 {
     if (styleSheetEditInProgress())
         return;
-    m_invalidatedDocuments.add(document);
-    if (m_creatingViaInspectorStyleSheet)
-        flushPendingFrontendMessages();
+    updateActiveStyleSheets(document, ExistingFrontendRefresh);
 }
 
 void InspectorCSSAgent::updateActiveStyleSheets(Document* document, StyleSheetsUpdateType styleSheetsUpdateType)
@@ -641,7 +628,6 @@
 
 void InspectorCSSAgent::documentDisposed(Document* document)
 {
-    m_invalidatedDocuments.remove(document);
     setActiveStyleSheets(document, Vector<CSSStyleSheet*>(), ExistingFrontendRefresh);
 }
 
@@ -910,8 +896,6 @@
         return;
     }
 
-    updateActiveStyleSheets(document, ExistingFrontendRefresh);
-
     *outStyleSheetId = inspectorStyleSheet->id();
 }
 
@@ -1332,8 +1316,8 @@
 
 void InspectorCSSAgent::styleSheetChanged(InspectorStyleSheet* styleSheet)
 {
-    flushPendingFrontendMessages();
-    m_frontend->styleSheetChanged(styleSheet->id());
+    if (m_frontend)
+        m_frontend->styleSheetChanged(styleSheet->id());
 }
 
 void InspectorCSSAgent::willReparseStyleSheet()