Create new target to hold gpu test code, enable direct testing of GrEffects in GM.

gm/gm.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 skiagm_DEFINED
 #define skiagm_DEFINED
 
@@ skipping 24 matching lines @@
 
         enum Flags {
             kSkipPDF_Flag               = 1 << 0,
             kSkipPicture_Flag           = 1 << 1,
             kSkipPipe_Flag              = 1 << 2,
             kSkipPipeCrossProcess_Flag  = 1 << 3,
             kSkipTiled_Flag             = 1 << 4,
             kSkip565_Flag               = 1 << 5,
             kSkipScaledReplay_Flag      = 1 << 6,
             kSkipGPU_Flag               = 1 << 7,
+
+            kGPUOnly_Flag               = 1 << 8,
         };
 
         void draw(SkCanvas*);
         void drawBackground(SkCanvas*);
         void drawContent(SkCanvas*);
 
         SkISize getISize() { return this->onISize(); }
         const char* shortName();
 
         uint32_t getFlags() const {
@@ skipping 50 matching lines @@
         SkString fShortName;
         SkColor  fBGColor;
         bool     fCanvasIsDeferred; // work-around problem in srcmode.cpp
         bool     fHaveCalledOnceBeforeDraw;
     };
 
     typedef SkTRegistry<GM*, void*> GMRegistry;
 }
 
 #endif