Set empty/wide-open genID on clip stack in more places and fix a bug in GrReduceClipStack.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6847116

git-svn-id: http://skia.googlecode.com/svn/trunk@6579 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrClipMaskManager.cpp b/src/gpu/GrClipMaskManager.cpp
index 0808b5e..9190bdc 100644
--- a/src/gpu/GrClipMaskManager.cpp
+++ b/src/gpu/GrClipMaskManager.cpp
@@ -90,11 +90,11 @@
             *initialState = kAllIn_InitialState;
             break;
         }
-        if (!embiggens && SkClipStack::kEmptyGenID == clip->fGenID) {
+        if (SkClipStack::kEmptyGenID == clip->fGenID) {
             *initialState = kAllOut_InitialState;
             break;
         }
-        if (!emsmallens && SkClipStack::kWideOpenGenID == clip->fGenID) {
+        if (SkClipStack::kWideOpenGenID == clip->fGenID) {
             *initialState = kAllIn_InitialState;
             break;
         }