Make copySurface work for texture dsts, return a bool, & add unit test.

src/gpu/GrDrawContext.cpp

 
 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrBatchTest.h"
 #include "GrColor.h"
@@ skipping 79 matching lines @@
     ASSERT_SINGLE_OWNER
     SkDEBUGCODE(this->validate();)
 
     if (!fDrawTarget || fDrawTarget->isClosed()) {
         fDrawTarget = fDrawingManager->newDrawTarget(fRenderTarget);
     }
 
     return fDrawTarget;
 }
 
-void GrDrawContext::copySurface(GrSurface* src, const SkIRect& srcRect, const SkIPoint& dstPoint) {
+bool GrDrawContext::copySurface(GrSurface* src, const SkIRect& srcRect, const SkIPoint& dstPoint) {
     ASSERT_SINGLE_OWNER
-    RETURN_IF_ABANDONED
+    RETURN_FALSE_IF_ABANDONED
     SkDEBUGCODE(this->validate();)
     GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::copySurface");
 
-    this->getDrawTarget()->copySurface(fRenderTarget, src, srcRect, dstPoint);
+    return this->getDrawTarget()->copySurface(fRenderTarget, src, srcRect, dstPoint);
 }
 
 void GrDrawContext::drawText(const GrClip& clip, const GrPaint& grPaint,
                              const SkPaint& skPaint,
                              const SkMatrix& viewMatrix,
                              const char text[], size_t byteLength,
                              SkScalar x, SkScalar y, const SkIRect& clipBounds) {
     ASSERT_SINGLE_OWNER
     RETURN_IF_ABANDONED
     SkDEBUGCODE(this->validate();)
@@ skipping 730 matching lines @@
 }
 
 void GrDrawContext::drawBatch(GrPipelineBuilder* pipelineBuilder, GrDrawBatch* batch) {
     ASSERT_SINGLE_OWNER
     RETURN_IF_ABANDONED
     SkDEBUGCODE(this->validate();)
     GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawBatch");
 
     this->getDrawTarget()->drawBatch(*pipelineBuilder, batch);
 }