Allow GrReducedClip to take non-integer query bounds

src/gpu/gl/GrGLIRect.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
 #ifndef GrGLIRect_DEFINED
@@ skipping 36 matching lines @@
                        GrSurfaceOrigin origin) {
         fLeft = glRect.fLeft + leftOffset;
         fWidth = width;
         if (kBottomLeft_GrSurfaceOrigin == origin) {
             fBottom = glRect.fBottom + (glRect.fHeight - topOffset - height);
         } else {
             fBottom = glRect.fBottom + topOffset;
         }
         fHeight = height;
 
-        SkASSERT(fLeft >= 0);
         SkASSERT(fWidth >= 0);
-        SkASSERT(fBottom >= 0);
         SkASSERT(fHeight >= 0);
     }
 
     bool contains(const GrGLIRect& glRect) const {
         return fLeft <= glRect.fLeft &&
                fBottom <= glRect.fBottom &&
                fLeft + fWidth >=  glRect.fLeft + glRect.fWidth &&
                fBottom + fHeight >=  glRect.fBottom + glRect.fHeight;
     }
 
     void invalidate() {fLeft = fWidth = fBottom = fHeight = -1;}
 
     bool operator ==(const GrGLIRect& glRect) const {
         return 0 == memcmp(this, &glRect, sizeof(GrGLIRect));
     }
 
     bool operator !=(const GrGLIRect& glRect) const {return !(*this == glRect);}
 };
 
 #endif