gpu, cmaa: remove redundant teximage binding

gpu/command_buffer/service/gles2_cmd_apply_framebuffer_attachment_cmaa_intel.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_apply_framebuffer_attachment_cmaa_intel.h"
 
 #include "base/logging.h"
 #include "gpu/command_buffer/service/framebuffer_manager.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "ui/gl/gl_context.h"
@@ skipping 406 matching lines @@
     // bottom, left) edges; also create depth mask as above depth and mark
     // potential Z sAND also copy source color data but only on edge pixels
     glUseProgram(edges_combine_shader_);
     glUniform1f(0, 1.0f);
     glUniform2f(1, 1.0f / width_, 1.0f / height_);
     glDepthMask(GL_TRUE);
     glDepthFunc(GL_ALWAYS);
     glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
 
     if (!is_gles31_compatible_) {
-      glUniform1i(edges_combine_shader_result_texture_float4_slot1_, 1);
       glUniform1i(edges_combine_shader_result_texture_slot2_, 2);
     }
-    glBindImageTextureEXT(1, dest_texture, 0, GL_FALSE, 0, GL_WRITE_ONLY,
-                          GL_RGBA8);
     glBindImageTextureEXT(2, edge_texture_a, 0, GL_FALSE, 0, GL_WRITE_ONLY,
                           edge_format);
 
     glActiveTexture(GL_TEXTURE1);
     glBindTexture(GL_TEXTURE_2D, edge_texture_b);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 
     glDrawArrays(GL_TRIANGLES, 0, 3);
   }
@@ skipping 1374 matching lines @@
         "void main() {                                                      \n"
         "  ivec2 screenPosI = ivec2( gl_FragCoord.xy );                     \n"
         "  vec4 pixel = texelFetch(inTexture, screenPosI, 0);               \n"
         "#ifdef OUT_FBO                                                     \n"
         "  outColor = pixel;                                                \n"
         "#else                                                              \n"
         "  imageStore(outTexture, screenPosI, pixel);                       \n"
         "#endif                                                             \n"
         "}                                                                  \n";
 
-}  // namespace gpu
+}  // namespace gpu