Bug 1447828 part 2 - Remove StyleBackendType uses from nsXULPrototypeCache. r=emilio

MozReview-Commit-ID: 1tYFBTk9BqF

--HG--
extra : rebase_source : 72c783c84ff36fddd6d49e79e7912f42bb0c11a8
extra : source : 4972e279ef76127e4898874478fcbd75c9631d76

dom/xbl/nsBindingManager.cpp

@@ -1036,13 +1036,11 @@ nsBindingManager::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
     n += mDocumentTable->ShallowSizeOfIncludingThis(aMallocSizeOf);
 #ifdef MOZ_XUL
     nsXULPrototypeCache* cache = nsXULPrototypeCache::GetInstance();
-    StyleBackendType backendType = mDocument->GetStyleBackendType();
 #endif
     for (auto iter = mDocumentTable->Iter(); !iter.Done(); iter.Next()) {
       nsXBLDocumentInfo* docInfo = iter.UserData();
 #ifdef MOZ_XUL
-      nsXBLDocumentInfo* cachedInfo =
+      nsXBLDocumentInfo* cachedInfo = cache->GetXBLDocumentInfo(iter.Key());
-        cache->GetXBLDocumentInfo(iter.Key(), backendType);
       if (cachedInfo == docInfo) {
         // If this binding has been cached, skip it since it can be
         // reused by other documents.

dom/xbl/nsXBLService.cpp

@@ -969,16 +969,9 @@ nsXBLService::LoadBindingDocumentInfo(nsIContent* aBoundElement,
   bool useXULCache = cache && cache->IsEnabled();
 
   if (!info && useXULCache) {
-    // Assume Gecko style backend for the XBL document without a bound
-    // document. The only case is loading platformHTMLBindings.xml which
-    // doesn't have any style sheets or style attributes.
-    StyleBackendType styleBackend
-      = aBoundDocument ? aBoundDocument->GetStyleBackendType()
-                       : StyleBackendType::Gecko;
-
     // This cache crosses the entire product, so that any XBL bindings that are
     // part of chrome will be reused across all XUL documents.
-    info = cache->GetXBLDocumentInfo(documentURI, styleBackend);
+    info = cache->GetXBLDocumentInfo(documentURI);
   }
 
   bool useStartupCache = useXULCache && IsChromeOrResourceURI(documentURI);
@@ -1042,12 +1035,6 @@ nsXBLService::LoadBindingDocumentInfo(nsIContent* aBoundElement,
     bindingManager->PutXBLDocumentInfo(info);
   }
 
-  MOZ_ASSERT(!aBoundDocument || !info ||
-             aBoundDocument->GetStyleBackendType() ==
-               info->GetDocument()->GetStyleBackendType(),
-             "Style backend type mismatched between the bound document and "
-             "the XBL document loaded.");
-
   info.forget(aResult);
 
   return NS_OK;

dom/xul/nsXULPrototypeCache.cpp

@@ -192,22 +192,16 @@ nsXULPrototypeCache::PutPrototype(nsXULPrototypeDocument* aDocument)
 }
 
 mozilla::StyleSheet*
-nsXULPrototypeCache::GetStyleSheet(nsIURI* aURI,
+nsXULPrototypeCache::GetStyleSheet(nsIURI* aURI)
-                                   StyleBackendType aType)
 {
-    StyleSheetTable& table = StyleSheetTableFor(aType);
+    return mStyleSheetTable.GetWeak(aURI);
-    return table.GetWeak(aURI);
 }
 
 nsresult
-nsXULPrototypeCache::PutStyleSheet(StyleSheet* aStyleSheet,
+nsXULPrototypeCache::PutStyleSheet(StyleSheet* aStyleSheet)
-                                   StyleBackendType aType)
 {
     nsIURI* uri = aStyleSheet->GetSheetURI();
-
+    mStyleSheetTable.Put(uri, aStyleSheet);
-    StyleSheetTable& table = StyleSheetTableFor(aType);
-    table.Put(uri, aStyleSheet);
-
     return NS_OK;
 }
 
@@ -240,24 +234,18 @@ nsXULPrototypeCache::PutScript(nsIURI* aURI,
 }
 
 nsXBLDocumentInfo*
-nsXULPrototypeCache::GetXBLDocumentInfo(nsIURI* aURL,
+nsXULPrototypeCache::GetXBLDocumentInfo(nsIURI* aURL)
-                                        StyleBackendType aType)
 {
-  MOZ_ASSERT(aType != StyleBackendType::None,
+  return mXBLDocTable.GetWeak(aURL);
-             "Please use either gecko or servo when looking up for the cache!");
-  return XBLDocTableFor(aType).GetWeak(aURL);
 }
 
 nsresult
 nsXULPrototypeCache::PutXBLDocumentInfo(nsXBLDocumentInfo* aDocumentInfo)
 {
   nsIURI* uri = aDocumentInfo->DocumentURI();
-  XBLDocTable& table =
+  nsXBLDocumentInfo* info = mXBLDocTable.GetWeak(uri);
-    XBLDocTableFor(aDocumentInfo->GetDocument()->GetStyleBackendType());
-
-  nsXBLDocumentInfo* info = table.GetWeak(uri);
   if (!info) {
-    table.Put(uri, aDocumentInfo);
+    mXBLDocTable.Put(uri, aDocumentInfo);
   }
   return NS_OK;
 }
@@ -265,13 +253,8 @@ nsXULPrototypeCache::PutXBLDocumentInfo(nsXBLDocumentInfo* aDocumentInfo)
 void
 nsXULPrototypeCache::FlushSkinFiles()
 {
-  StyleBackendType tableTypes[] = { StyleBackendType::Gecko,
-                                    StyleBackendType::Servo };
-
-  for (auto tableType : tableTypes) {
   // Flush out skin XBL files from the cache.
-    XBLDocTable& xblDocTable = XBLDocTableFor(tableType);
+  for (auto iter = mXBLDocTable.Iter(); !iter.Done(); iter.Next()) {
-    for (auto iter = xblDocTable.Iter(); !iter.Done(); iter.Next()) {
     nsAutoCString str;
     iter.Key()->GetPathQueryRef(str);
     if (strncmp(str.get(), "/skin", 5) == 0) {
@@ -280,8 +263,7 @@ nsXULPrototypeCache::FlushSkinFiles()
   }
 
   // Now flush out our skin stylesheets from the cache.
-    StyleSheetTable& table = StyleSheetTableFor(tableType);
+  for (auto iter = mStyleSheetTable.Iter(); !iter.Done(); iter.Next()) {
-    for (auto iter = table.Iter(); !iter.Done(); iter.Next()) {
     nsAutoCString str;
     iter.Data()->GetSheetURI()->GetPathQueryRef(str);
     if (strncmp(str.get(), "/skin", 5) == 0) {
@@ -292,11 +274,10 @@ nsXULPrototypeCache::FlushSkinFiles()
   // Iterate over all the remaining XBL and make sure cached
   // scoped skin stylesheets are flushed and refetched by the
   // prototype bindings.
-    for (auto iter = xblDocTable.Iter(); !iter.Done(); iter.Next()) {
+  for (auto iter = mXBLDocTable.Iter(); !iter.Done(); iter.Next()) {
     iter.Data()->FlushSkinStylesheets();
   }
 }
-}
 
 void
 nsXULPrototypeCache::FlushScripts()
@@ -309,10 +290,8 @@ nsXULPrototypeCache::Flush()
 {
     mPrototypeTable.Clear();
     mScriptTable.Clear();
-    mGeckoStyleSheetTable.Clear();
+    mStyleSheetTable.Clear();
-    mServoStyleSheetTable.Clear();
+    mXBLDocTable.Clear();
-    mGeckoXBLDocTable.Clear();
-    mServoXBLDocTable.Clear();
 }
 
 
@@ -611,15 +590,9 @@ nsXULPrototypeCache::BeginCaching(nsIURI* aURI)
 void
 nsXULPrototypeCache::MarkInCCGeneration(uint32_t aGeneration)
 {
-    StyleBackendType tableTypes[] = { StyleBackendType::Gecko,
+    for (auto iter = mXBLDocTable.Iter(); !iter.Done(); iter.Next()) {
-                                      StyleBackendType::Servo };
-
-    for (auto tableType : tableTypes) {
-        XBLDocTable& xblDocTable = XBLDocTableFor(tableType);
-        for (auto iter = xblDocTable.Iter(); !iter.Done(); iter.Next()) {
         iter.Data()->MarkInCCGeneration(aGeneration);
     }
-    }
     for (auto iter = mPrototypeTable.Iter(); !iter.Done(); iter.Next()) {
         iter.Data()->MarkInCCGeneration(aGeneration);
     }
@@ -679,30 +652,23 @@ nsXULPrototypeCache::CollectMemoryReports(
   // TODO Report content in mPrototypeTable?
 
   other += sInstance->
-    mGeckoStyleSheetTable.ShallowSizeOfExcludingThis(mallocSizeOf);
+    mStyleSheetTable.ShallowSizeOfExcludingThis(mallocSizeOf);
-  // TODO Report content inside mGeckoStyleSheetTable?
+  // TODO Report content inside mStyleSheetTable?
-  other += sInstance->
-    mServoStyleSheetTable.ShallowSizeOfExcludingThis(mallocSizeOf);
-  // TODO Report content inside mServoStyleSheetTable?
 
   other += sInstance->
     mScriptTable.ShallowSizeOfExcludingThis(mallocSizeOf);
   // TODO Report content inside mScriptTable?
 
-  auto reportXBLDocTable =
+  other += sInstance->mXBLDocTable.ShallowSizeOfExcludingThis(mallocSizeOf);
-    [&](const nsACString& prefix, const XBLDocTable& table) {
+  for (auto iter = sInstance->mXBLDocTable.ConstIter();
-      other += table.ShallowSizeOfExcludingThis(mallocSizeOf);
+       !iter.Done(); iter.Next()) {
-      for (auto iter = table.ConstIter(); !iter.Done(); iter.Next()) {
+    nsAutoCString path;
-        nsAutoCString path(prefix);
+    path += "xbl-docs/(";
-        path += "-xbl-docs/(";
     AppendURIForMemoryReport(iter.Key(), path);
     path += ")";
     size_t size = iter.UserData()->SizeOfIncludingThis(mallocSizeOf);
     REPORT_SIZE(path, size, "Memory used by this XBL document.");
   }
-    };
-  reportXBLDocTable(NS_LITERAL_CSTRING("gecko"), sInstance->mGeckoXBLDocTable);
-  reportXBLDocTable(NS_LITERAL_CSTRING("servo"), sInstance->mServoXBLDocTable);
 
   other += sInstance->
     mStartupCacheURITable.ShallowSizeOfExcludingThis(mallocSizeOf);

dom/xul/nsXULPrototypeCache.h

@@ -66,8 +66,7 @@ public:
     JSScript* GetScript(nsIURI* aURI);
     nsresult PutScript(nsIURI* aURI, JS::Handle<JSScript*> aScriptObject);
 
-    nsXBLDocumentInfo* GetXBLDocumentInfo(nsIURI* aURL,
+    nsXBLDocumentInfo* GetXBLDocumentInfo(nsIURI* aURL);
-                                          mozilla::StyleBackendType aType);
 
     nsresult PutXBLDocumentInfo(nsXBLDocumentInfo* aDocumentInfo);
 
@@ -75,15 +74,13 @@ public:
      * Get a style sheet by URI. If the style sheet is not in the cache,
      * returns nullptr.
      */
-    mozilla::StyleSheet* GetStyleSheet(nsIURI* aURI,
+    mozilla::StyleSheet* GetStyleSheet(nsIURI* aURI);
-                                       mozilla::StyleBackendType aType);
 
     /**
      * Store a style sheet in the cache. The key, style sheet's URI is obtained
      * from the style sheet itself.
      */
-    nsresult PutStyleSheet(mozilla::StyleSheet* aStyleSheet,
+    nsresult PutStyleSheet(mozilla::StyleSheet* aStyleSheet);
-                           mozilla::StyleBackendType aType);
 
     /**
      * Write the XUL prototype document to a cache file. The proto must be
@@ -130,22 +127,10 @@ protected:
     using StyleSheetTable = nsRefPtrHashtable<nsURIHashKey, mozilla::StyleSheet>;
     using XBLDocTable = nsRefPtrHashtable<nsURIHashKey, nsXBLDocumentInfo>;
 
-    StyleSheetTable& StyleSheetTableFor(mozilla::StyleBackendType aType) {
-      return aType == mozilla::StyleBackendType::Gecko ? mGeckoStyleSheetTable
-                                                       : mServoStyleSheetTable;
-    }
-
-    XBLDocTable& XBLDocTableFor(mozilla::StyleBackendType aType) {
-      return aType == mozilla::StyleBackendType::Gecko ? mGeckoXBLDocTable
-                                                       : mServoXBLDocTable;
-    }
-
     nsRefPtrHashtable<nsURIHashKey,nsXULPrototypeDocument>   mPrototypeTable; // owns the prototypes
-    StyleSheetTable                                          mGeckoStyleSheetTable;
+    StyleSheetTable                                          mStyleSheetTable;
-    StyleSheetTable                                          mServoStyleSheetTable;
     nsJSThingHashtable<nsURIHashKey, JSScript*>              mScriptTable;
-    XBLDocTable                                              mGeckoXBLDocTable;
+    XBLDocTable                                              mXBLDocTable;
-    XBLDocTable                                              mServoXBLDocTable;
 
     // URIs already written to the startup cache, to prevent double-caching.
     nsTHashtable<nsURIHashKey>                               mStartupCacheURITable;

layout/style/Loader.cpp

@@ -922,7 +922,7 @@ Loader::CreateSheet(nsIURI* aURI,
     if (IsChromeURI(aURI)) {
       nsXULPrototypeCache* cache = nsXULPrototypeCache::GetInstance();
       if (cache && cache->IsEnabled()) {
-        sheet = cache->GetStyleSheet(aURI, GetStyleBackendType());
+        sheet = cache->GetStyleSheet(aURI);
         LOG(("  From XUL cache: %p", sheet.get()));
       }
     }
@@ -1802,11 +1802,11 @@ Loader::DoSheetComplete(SheetLoadData* aLoadData, LoadDataArray& aDatasToNotify)
     if (IsChromeURI(aLoadData->mURI)) {
       nsXULPrototypeCache* cache = nsXULPrototypeCache::GetInstance();
       if (cache && cache->IsEnabled()) {
-        if (!cache->GetStyleSheet(aLoadData->mURI, GetStyleBackendType())) {
+        if (!cache->GetStyleSheet(aLoadData->mURI)) {
           LOG(("  Putting sheet in XUL prototype cache"));
           NS_ASSERTION(sheet->IsComplete(),
                        "Should only be caching complete sheets");
-          cache->PutStyleSheet(sheet, GetStyleBackendType());
+          cache->PutStyleSheet(sheet);
         }
       }
     }