Remove the ASTContext parameter from the attribute-related methods of Decl.
The implementations of these methods can Use Decl::getASTContext() to get the ASTContext.

This commit touches a lot of files since call sites for these methods are everywhere.
I used pre-tokenized "carbon.h" and "cocoa.h" headers to do some timings, and there was no real time difference between before the commit and after it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74501 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/CFRefCount.cpp b/lib/Analysis/CFRefCount.cpp
index 618214e..b25fdb3 100644
--- a/lib/Analysis/CFRefCount.cpp
+++ b/lib/Analysis/CFRefCount.cpp
@@ -1248,15 +1248,15 @@
   
   // Determine if there is a special return effect for this method.
   if (isTrackedObjCObjectType(RetTy)) {
-    if (FD->getAttr<NSReturnsRetainedAttr>(Ctx)) {
+    if (FD->getAttr<NSReturnsRetainedAttr>()) {
       Summ.setRetEffect(ObjCAllocRetE);
     }
-    else if (FD->getAttr<CFReturnsRetainedAttr>(Ctx)) {
+    else if (FD->getAttr<CFReturnsRetainedAttr>()) {
       Summ.setRetEffect(RetEffect::MakeOwned(RetEffect::CF, true));
     }
   }
   else if (RetTy->getAsPointerType()) {
-    if (FD->getAttr<CFReturnsRetainedAttr>(Ctx)) {
+    if (FD->getAttr<CFReturnsRetainedAttr>()) {
       Summ.setRetEffect(RetEffect::MakeOwned(RetEffect::CF, true));
     }
   }
@@ -1270,10 +1270,10 @@
 
   // Determine if there is a special return effect for this method.
   if (isTrackedObjCObjectType(MD->getResultType())) {
-    if (MD->getAttr<NSReturnsRetainedAttr>(Ctx)) {
+    if (MD->getAttr<NSReturnsRetainedAttr>()) {
       Summ.setRetEffect(ObjCAllocRetE);
     }
-    else if (MD->getAttr<CFReturnsRetainedAttr>(Ctx)) {
+    else if (MD->getAttr<CFReturnsRetainedAttr>()) {
       Summ.setRetEffect(RetEffect::MakeOwned(RetEffect::CF, true));
     }
   }