From 8a324dc194f4602641f4e348c421236665782827 Mon Sep 17 00:00:00 2001
From: Trevor Saunders <trev.saunders@gmail.com>
Date: Sun, 31 Mar 2013 18:43:04 -0400
Subject: [PATCH] bug 856779 - remove nsFrameManager::Init() r=dholbert

---
 layout/base/nsCSSFrameConstructor.cpp |  5 +++--
 layout/base/nsCSSFrameConstructor.h   |  3 ++-
 layout/base/nsFrameManager.cpp        | 17 -----------------
 layout/base/nsFrameManager.h          |  8 ++++----
 layout/base/nsPresShell.cpp           | 14 +-------------
 5 files changed, 10 insertions(+), 37 deletions(-)

diff --git a/layout/base/nsCSSFrameConstructor.cpp b/layout/base/nsCSSFrameConstructor.cpp
index 3edc190ae0c..910b352ec5c 100644
--- a/layout/base/nsCSSFrameConstructor.cpp
+++ b/layout/base/nsCSSFrameConstructor.cpp
@@ -1399,8 +1399,9 @@ MoveChildrenTo(nsPresContext* aPresContext,
 //----------------------------------------------------------------------
 
 nsCSSFrameConstructor::nsCSSFrameConstructor(nsIDocument *aDocument,
-                                             nsIPresShell *aPresShell)
-  : nsFrameManager(aPresShell)
+                                             nsIPresShell *aPresShell,
+                                             nsStyleSet* aStyleSet)
+  : nsFrameManager(aPresShell, aStyleSet)
   , mDocument(aDocument)
   , mRootElementFrame(nullptr)
   , mRootElementStyleFrame(nullptr)
diff --git a/layout/base/nsCSSFrameConstructor.h b/layout/base/nsCSSFrameConstructor.h
index 26b6db9ecf5..7a8db6e2285 100644
--- a/layout/base/nsCSSFrameConstructor.h
+++ b/layout/base/nsCSSFrameConstructor.h
@@ -55,7 +55,8 @@ public:
   typedef mozilla::css::RestyleTracker RestyleTracker;
   typedef mozilla::css::OverflowChangedTracker OverflowChangedTracker;
 
-  nsCSSFrameConstructor(nsIDocument *aDocument, nsIPresShell* aPresShell);
+  nsCSSFrameConstructor(nsIDocument *aDocument, nsIPresShell* aPresShell,
+                        nsStyleSet* aStyleSet);
   ~nsCSSFrameConstructor(void) {
     NS_ASSERTION(mUpdateCount == 0, "Dying in the middle of our own update?");
   }
diff --git a/layout/base/nsFrameManager.cpp b/layout/base/nsFrameManager.cpp
index f96fed2307d..f137e68e7db 100644
--- a/layout/base/nsFrameManager.cpp
+++ b/layout/base/nsFrameManager.cpp
@@ -188,23 +188,6 @@ nsFrameManager::~nsFrameManager()
   NS_ASSERTION(!mPresShell, "nsFrameManager::Destroy never called");
 }
 
-nsresult
-nsFrameManager::Init(nsStyleSet* aStyleSet)
-{
-  if (!mPresShell) {
-    NS_ERROR("null pres shell");
-    return NS_ERROR_FAILURE;
-  }
-
-  if (!aStyleSet) {
-    NS_ERROR("null style set");
-    return NS_ERROR_FAILURE;
-  }
-
-  mStyleSet = aStyleSet;
-  return NS_OK;
-}
-
 void
 nsFrameManager::Destroy()
 {
diff --git a/layout/base/nsFrameManager.h b/layout/base/nsFrameManager.h
index 283dab9a115..62014eeea80 100644
--- a/layout/base/nsFrameManager.h
+++ b/layout/base/nsFrameManager.h
@@ -49,14 +49,14 @@ class nsFrameManager : public nsFrameManagerBase
   typedef nsIFrame::ChildListID ChildListID;
 
 public:
-  nsFrameManager(nsIPresShell *aPresShell) NS_HIDDEN {
+  nsFrameManager(nsIPresShell *aPresShell, nsStyleSet* aStyleSet) NS_HIDDEN {
     mPresShell = aPresShell;
+    mStyleSet = aStyleSet;
+    MOZ_ASSERT(mPresShell, "need a pres shell");
+    MOZ_ASSERT(mStyleSet, "need a style set");
   }
   ~nsFrameManager() NS_HIDDEN;
 
-  // Initialization
-  NS_HIDDEN_(nsresult) Init(nsStyleSet* aStyleSet);
-
   /*
    * After Destroy is called, it is an error to call any FrameManager methods.
    * Destroy should be called when the frame tree managed by the frame
diff --git a/layout/base/nsPresShell.cpp b/layout/base/nsPresShell.cpp
index b7de7fbb697..31d8d05fb30 100644
--- a/layout/base/nsPresShell.cpp
+++ b/layout/base/nsPresShell.cpp
@@ -781,7 +781,6 @@ PresShell::Init(nsIDocument* aDocument,
   NS_PRECONDITION(nullptr != aDocument, "null ptr");
   NS_PRECONDITION(nullptr != aPresContext, "null ptr");
   NS_PRECONDITION(nullptr != aViewManager, "null ptr");
-  nsresult result;
 
   if ((nullptr == aDocument) || (nullptr == aPresContext) ||
       (nullptr == aViewManager)) {
@@ -799,7 +798,7 @@ PresShell::Init(nsIDocument* aDocument,
   mViewManager = aViewManager;
 
   // Create our frame constructor.
-  mFrameConstructor = new nsCSSFrameConstructor(mDocument, this);
+  mFrameConstructor = new nsCSSFrameConstructor(mDocument, this, aStyleSet);
 
   mFrameManager = mFrameConstructor;
 
@@ -831,17 +830,6 @@ PresShell::Init(nsIDocument* aDocument,
 
   NS_ADDREF(mSelection = new nsFrameSelection());
 
-  // Create and initialize the frame manager
-  // XXXjwatt it would be better if we did this right after creating
-  // mFrameConstructor, since the frame constructor and frame manager
-  // are now the same object.
-  result =  mFrameConstructor->Init(mStyleSet);
-  if (NS_FAILED(result)) {
-    NS_WARNING("Frame manager initialization failed");
-    mStyleSet = nullptr;
-    return result;
-  }
-
   mSelection->Init(this, nullptr);
 
   // Important: this has to happen after the selection has been set up