gpu: Remove map_image field from gpu::Capabilities.

cc/output/gl_renderer.cc

 // Copyright 2010 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 "cc/output/gl_renderer.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 #include <string>
@@ skipping 222 matching lines @@
 
   // The updater can access textures while the GLRenderer is using them.
   capabilities_.allow_partial_texture_updates = true;
 
   // Check for texture fast paths. Currently we always use MO8 textures,
   // so we only need to avoid POT textures if we have an NPOT fast-path.
   capabilities_.avoid_pow2_textures = context_caps.gpu.fast_npot_mo8_textures;
 
   capabilities_.using_offscreen_context3d = true;
 
-  capabilities_.using_map_image =
-      settings_->use_map_image && context_caps.gpu.map_image;
+  capabilities_.using_map_image = settings_->use_map_image;
 
   capabilities_.using_discard_framebuffer =
       context_caps.gpu.discard_framebuffer;
 
   capabilities_.allow_rasterize_on_demand = true;
 
   InitializeSharedObjects();
 }
 
 GLRenderer::~GLRenderer() {
@@ skipping 2786 matching lines @@
   is_scissor_enabled_ = false;
   GLC(gl_, gl_->Disable(GL_SCISSOR_TEST));
   scissor_rect_needs_reset_ = true;
 }
 
 bool GLRenderer::IsContextLost() {
   return output_surface_->context_provider()->IsContextLost();
 }
 
 }  // namespace cc