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/AST/Decl.cpp b/lib/AST/Decl.cpp
index 77fb20c..89b8765 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -412,14 +412,14 @@
   // In C, any non-static, non-overloadable function has external
   // linkage.
   if (!Context.getLangOptions().CPlusPlus)
-    return getStorageClass() != Static && !getAttr<OverloadableAttr>(Context);
+    return getStorageClass() != Static && !getAttr<OverloadableAttr>();
 
   for (const DeclContext *DC = getDeclContext(); !DC->isTranslationUnit(); 
        DC = DC->getParent()) {
     if (const LinkageSpecDecl *Linkage = dyn_cast<LinkageSpecDecl>(DC))  {
       if (Linkage->getLanguage() == LinkageSpecDecl::lang_c)
         return getStorageClass() != Static && 
-               !getAttr<OverloadableAttr>(Context);
+               !getAttr<OverloadableAttr>();
 
       break;
     }
@@ -484,7 +484,7 @@
   if (isa<LinkageSpecDecl>(getDeclContext()) &&
       cast<LinkageSpecDecl>(getDeclContext())->getLanguage() 
         == LinkageSpecDecl::lang_c &&
-      !getAttr<OverloadableAttr>(Context))
+      !getAttr<OverloadableAttr>())
     return BuiltinID;
 
   // Not a builtin
@@ -535,12 +535,12 @@
 }
 
 bool FunctionDecl::hasActiveGNUInlineAttribute(ASTContext &Context) const {
-  if (!isInline() || !hasAttr<GNUInlineAttr>(Context))
+  if (!isInline() || !hasAttr<GNUInlineAttr>())
     return false;
 
   for (const FunctionDecl *FD = getPreviousDeclaration(); FD; 
        FD = FD->getPreviousDeclaration()) {
-    if (FD->isInline() && !FD->hasAttr<GNUInlineAttr>(Context))
+    if (FD->isInline() && !FD->hasAttr<GNUInlineAttr>())
       return false;
   }
 
@@ -552,7 +552,7 @@
     return false;
 
   for (const FunctionDecl *FD = this; FD; FD = FD->getPreviousDeclaration())
-    if (FD->getStorageClass() == Extern && FD->hasAttr<GNUInlineAttr>(Context))
+    if (FD->getStorageClass() == Extern && FD->hasAttr<GNUInlineAttr>())
       return true;
 
   return false;