make the filter mode for GrTextureAccess an enum so we can plumb down

src/gpu/gl/GrGpuGL.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 "GrGpuGL.h"
 #include "GrGLStencilBuffer.h"
@@ skipping 1988 matching lines @@
         this->setTextureUnit(unitIdx);
         GL_CALL(BindTexture(GR_GL_TEXTURE_2D, texture->textureID()));
         fHWBoundTextures[unitIdx] = texture;
     }
 
     ResetTimestamp timestamp;
     const GrGLTexture::TexParams& oldTexParams = texture->getCachedTexParams(&timestamp);
     bool setAll = timestamp < this->getResetTimestamp();
     GrGLTexture::TexParams newTexParams;
 
-    newTexParams.fFilter = params.isBilerp() ? GR_GL_LINEAR : GR_GL_NEAREST;
+    newTexParams.fFilter = (params.filterMode() == GrTextureParams::kNone_FilterMode) ? GR_GL_LINEAR : GR_GL_NEAREST;
 
     newTexParams.fWrapS = tile_to_gl_wrap(params.getTileModeX());
     newTexParams.fWrapT = tile_to_gl_wrap(params.getTileModeY());
     memcpy(newTexParams.fSwizzleRGBA,
            GrGLShaderBuilder::GetTexParamSwizzle(texture->config(), this->glCaps()),
            sizeof(newTexParams.fSwizzleRGBA));
     if (setAll || newTexParams.fFilter != oldTexParams.fFilter) {
         this->setTextureUnit(unitIdx);
         GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
                               GR_GL_TEXTURE_MAG_FILTER,
@@ skipping 495 matching lines @@
             this->setVertexArrayID(gpu, 0);
         }
         int attrCount = gpu->glCaps().maxVertexAttributes();
         if (fDefaultVertexArrayAttribState.count() != attrCount) {
             fDefaultVertexArrayAttribState.resize(attrCount);
         }
         attribState = &fDefaultVertexArrayAttribState;
     }
     return attribState;
 }