check for wide-open inside quickContains

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2263373002

Review-Url: https://codereview.chromium.org/2263373002
diff --git a/src/core/SkClipStack.cpp b/src/core/SkClipStack.cpp
index 12ad3bb..8bab586 100644
--- a/src/core/SkClipStack.cpp
+++ b/src/core/SkClipStack.cpp
@@ -621,7 +621,7 @@
     }
 }
 
-bool SkClipStack::quickContains(const SkRect& rect) const {
+bool SkClipStack::internalQuickContains(const SkRect& rect) const {
 
     Iter iter(*this, Iter::kTop_IterStart);
     const Element* element = iter.prev();
@@ -646,7 +646,7 @@
     return true;
 }
 
-bool SkClipStack::quickContains(const SkRRect& rrect) const {
+bool SkClipStack::internalQuickContains(const SkRRect& rrect) const {
 
     Iter iter(*this, Iter::kTop_IterStart);
     const Element* element = iter.prev();
@@ -771,10 +771,6 @@
     ((Element*)fDeque.back())->fGenID = kEmptyGenID;
 }
 
-bool SkClipStack::isWideOpen() const {
-    return this->getTopmostGenID() == kWideOpenGenID;
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
 SkClipStack::Iter::Iter() : fStack(nullptr) {