Workaround for PowerVR clear issue.

src/gpu/GrInOrderDrawBuffer.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 "GrInOrderDrawBuffer.h"
 
 #include "GrBufferAllocPool.h"
@@ skipping 396 matching lines @@
     memcpy(dp->transforms(), transforms, sizeOfTransforms);
     dp->fTransformsType = transformsType;
     dp->fFill = fill;
     if (dstCopy) {
         dp->fDstCopy = *dstCopy;
     }
 
     this->recordTraceMarkersIfNecessary();
 }
 
-void GrInOrderDrawBuffer::clear(const SkIRect* rect, GrColor color,
-                                bool canIgnoreRect, GrRenderTarget* renderTarget) {
+void GrInOrderDrawBuffer::onClear(const SkIRect* rect, GrColor color,
+                                  bool canIgnoreRect, GrRenderTarget* renderTarget) {
     SkIRect r;
     if (NULL == renderTarget) {
         renderTarget = this->drawState()->getRenderTarget();
         SkASSERT(renderTarget);
     }
     if (NULL == rect) {
         // We could do something smart and remove previous draws and clears to
         // the current render target. If we get that smart we have to make sure
         // those draws aren't read before this clear (render-to-texture).
         r.setLTRB(0, 0, renderTarget->width(), renderTarget->height());
@@ skipping 387 matching lines @@
         fCmdBuffer.back().fType = add_trace_bit(fCmdBuffer.back().fType);
         fGpuCmdMarkers.push_back(activeTraceMarkers);
     }
 }
 
 void GrInOrderDrawBuffer::clipWillBeSet(const GrClipData* newClipData) {
     INHERITED::clipWillBeSet(newClipData);
     fClipSet = true;
     fClipProxyState = kUnknown_ClipProxyState;
 }