Fix query for GR_GL_IMPLEMENTATION_COLOR_READ_FORMAT for GrPixelConfigs that aren't renderable

src/gpu/gl/GrGLCaps.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 GrGLCaps_DEFINED
 #define GrGLCaps_DEFINED
@@ skipping 302 matching lines @@
     /// Are the baseInstance fields supported in indirect draw commands?
     bool baseInstanceSupport() const { return fBaseInstanceSupport; }
 
     /// Use indices or vertices in CPU arrays rather than VBOs for dynamic content.
     bool useNonVBOVertexAndIndexDynamicData() const { return fUseNonVBOVertexAndIndexDynamicData; }
 
     /// Does ReadPixels support reading readConfig pixels from a FBO that is surfaceConfig?
     bool readPixelsSupported(GrPixelConfig surfaceConfig,
                              GrPixelConfig readConfig,
                              std::function<void (GrGLenum, GrGLint*)> getIntegerv,
-                             std::function<bool ()> bindRenderTarget) const;
+                             std::function<bool ()> bindRenderTarget,
+                             std::function<void ()> unbindRenderTarget) const;
 
     bool isCoreProfile() const { return fIsCoreProfile; }
 
     bool bindFragDataLocationSupport() const { return fBindFragDataLocationSupport; }
 
     bool bindUniformLocationSupport() const { return fBindUniformLocationSupport; }
 
     /// Are textures with GL_TEXTURE_RECTANGLE type supported.
     bool rectangleTextureSupport() const { return fRectangleTextureSupport; }
 
@@ skipping 158 matching lines @@
 
         GrSwizzle fSwizzle;
     };
 
     ConfigInfo fConfigTable[kGrPixelConfigCnt];
 
     typedef GrCaps INHERITED;
 };
 
 #endif