Combine similar DrawPaths calls in GrInOrderDrawBuffer

src/gpu/GrClipMaskManager.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrClipMaskManager_DEFINED
 #define GrClipMaskManager_DEFINED
 
@@ skipping 32 matching lines @@
         , fClipTarget(NULL)
         , fClipMode(kIgnoreClip_StencilClipMode) {
     }
 
     // The state of the scissor is controlled by the clip manager, no one else should set
     // Scissor state.  This should really be on Gpu itself.  We should revist this when GPU
     // and drawtarget are separate
     struct ScissorState {
         ScissorState() : fEnabled(false) {}
         void set(const SkIRect& rect) { fRect = rect; fEnabled = true; }
-        bool operator==(const ScissorState& other) {
+        bool operator==(const ScissorState& other) const {
             return fEnabled == other.fEnabled &&
                     (false == fEnabled || fRect == other.fRect);
         }
-        bool operator!=(const ScissorState& other) { return !(*this == other); }
+        bool operator!=(const ScissorState& other) const { return !(*this == other); }
         bool    fEnabled;
         SkIRect fRect;
     };
 
     /**
      * Creates a clip mask if necessary as a stencil buffer or alpha texture
      * and sets the GrGpu's scissor and stencil state. If the return is false
      * then the draw can be skipped. The AutoRestoreEffects is initialized by
      * the manager when it must install additional effects to implement the
      * clip. devBounds is optional but can help optimize clipping.
@@ skipping 126 matching lines @@
     } fCurrClipMaskType;
 
     GrClipMaskCache fAACache;       // cache for the AA path
     GrClipTarget*   fClipTarget;
     StencilClipMode fClipMode;
 
     typedef SkNoncopyable INHERITED;
 };
 
 #endif // GrClipMaskManager_DEFINED