Backing out Bug 268798 which caused a Tp regression. See bug 305356 for details. r+sr=bz, a=asa

modules/libpr0n/src/imgCache.cpp

@@ -344,12 +344,10 @@ PRBool imgCache::Remove(nsIURI *aKey)
 NS_IMETHODIMP
 imgCache::Observe(nsISupports* aSubject, const char* aTopic, const PRUnichar* aSomeData)
 {
-  if (strcmp(aTopic, "memory-pressure") == 0) {
-    ClearCache(PR_FALSE);
-  }
-  else if (strcmp(aTopic, "chrome-flush-skin-caches") == 0 || 
-           strcmp(aTopic, "chrome-flush-caches") == 0) {
+  if (strcmp(aTopic, "memory-pressure") == 0 ||
+      strcmp(aTopic, "chrome-flush-skin-caches") == 0 ||
+      strcmp(aTopic, "chrome-flush-caches") == 0)
     ClearCache(PR_TRUE);
-  }
+
   return NS_OK;
 }