Revert of Add device space "nudge" to gpu draws

src/core/SkClipStack.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkClipStack.h"
 #include "SkPath.h"
@@ skipping 400 matching lines @@
                 fFiniteBoundType = kInsideOut_BoundsType;
             } else {
                 fFiniteBoundType = kNormal_BoundsType;
             }
             break;
         case kEmpty_Type:
             SkDEBUGFAIL("We shouldn't get here with an empty element.");
             break;
     }
 
+    if (!fDoAA) {
+        // Here we mimic a non-anti-aliased scanline system. If there is
+        // no anti-aliasing we can integerize the bounding box to exclude
+        // fractional parts that won't be rendered.
+        // Note: the left edge is handled slightly differently below. We
+        // are a bit more generous in the rounding since we don't want to
+        // risk missing the left pixels when fLeft is very close to .5
+        fFiniteBound.set(SkScalarFloorToScalar(fFiniteBound.fLeft+0.45f),
+                         SkScalarRoundToScalar(fFiniteBound.fTop),
+                         SkScalarRoundToScalar(fFiniteBound.fRight),
+                         SkScalarRoundToScalar(fFiniteBound.fBottom));
+    }
+
     // Now determine the previous Element's bound information taking into
     // account that there may be no previous clip
     SkRect prevFinite;
     SkClipStack::BoundsType prevType;
 
     if (NULL == prior) {
         // no prior clip means the entire plane is writable
         prevFinite.setEmpty();   // there are no pixels that cannot be drawn to
         prevType = kInsideOut_BoundsType;
     } else {
@@ skipping 457 matching lines @@
 
 void SkClipStack::dump() const {
     B2TIter iter(*this);
     const Element* e;
     while ((e = iter.next())) {
         e->dump();
         SkDebugf("\n");
     }
 }
 #endif