Make max number of vertex attributes be checked dynamically

src/gpu/gl/GrGLGpu.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 "GrGLGpu.h"
 #include "GrGLGLSL.h"
 #include "GrGLStencilAttachment.h"
@@ skipping 196 matching lines @@
         SkDebugf("------ RENDERER %s\n", renderer);
         SkDebugf("------ VERSION %s\n",  version);
         SkDebugf("------ EXTENSIONS\n");
         this->glContext().extensions().print();
         SkDebugf("\n");
         SkDebugf("%s", this->glCaps().dump().c_str());
     }
 
     fProgramCache = new ProgramCache(this);
 
-    SkASSERT(this->glCaps().maxVertexAttributes() >= GrGeometryProcessor::kMaxVertexAttribs);
-
     fHWProgramID = 0;
     fTempSrcFBOID = 0;
     fTempDstFBOID = 0;
     fStencilClearFBOID = 0;
 
     if (this->glCaps().shaderCaps()->pathRenderingSupport()) {
         fPathRendering.reset(new GrGLPathRendering(this));
     }
     this->createCopyPrograms();
     fWireRectProgram.fProgram = 0;
@@ skipping 4188 matching lines @@
         if (GR_GL_TEXTURE_EXTERNAL == glTexture->target() ||
             GR_GL_TEXTURE_RECTANGLE == glTexture->target()) {
             copyParams->fFilter = GrTextureParams::kNone_FilterMode;
             copyParams->fWidth = texture->width();
             copyParams->fHeight = texture->height();
             return true;
         }
     }
     return false;
 }