Bug 253889: DeCOMtaminate nsIPresShell - make some methods const. r=roc

--HG--
extra : rebase_source : 94167aa329d4021677027f6bb6b1674d278f53f5

layout/base/nsIPresShell.h

@@ -235,9 +235,9 @@ public:
 
   nsIDocument* GetDocument() const { return mDocument; }
 
-  nsPresContext* GetPresContext() { return mPresContext; }
+  nsPresContext* GetPresContext() const { return mPresContext; }
 
-  nsIViewManager* GetViewManager() { return mViewManager; }
+  nsIViewManager* GetViewManager() const { return mViewManager; }
 
 #ifdef _IMPL_NS_LAYOUT
   nsStyleSet*  StyleSet() { return mStyleSet; }
@@ -438,7 +438,7 @@ public:
    * @param aIsSafeToFlush PR_TRUE if it is safe, PR_FALSE otherwise.
    * 
    */
-  virtual NS_HIDDEN_(PRBool) IsSafeToFlush() = 0;
+  virtual NS_HIDDEN_(PRBool) IsSafeToFlush() const = 0;
 
   /**
    * Flush pending notifications of the type specified.  This method

layout/base/nsPresShell.cpp

@@ -702,7 +702,7 @@ public:
                                             nsFrameState aBitToAdd);
   virtual NS_HIDDEN_(void) FrameNeedsToContinueReflow(nsIFrame *aFrame);
   virtual NS_HIDDEN_(void) CancelAllPendingReflows();
-  virtual NS_HIDDEN_(PRBool) IsSafeToFlush();
+  virtual NS_HIDDEN_(PRBool) IsSafeToFlush() const;
   virtual NS_HIDDEN_(void) FlushPendingNotifications(mozFlushType aType);
 
   /**
@@ -4580,7 +4580,7 @@ PresShell::HandlePostedReflowCallbacks(PRBool aInterruptible)
 }
 
 PRBool
-PresShell::IsSafeToFlush()
+PresShell::IsSafeToFlush() const
 {
   // Not safe if we are reflowing or in the middle of frame construction
   PRBool isSafeToFlush = !mIsReflowing &&