Update GL_IMPLEMENTATION_COLOR_READ_FORMAT for BGRA

gpu/command_buffer/service/feature_info.cc

 // Copyright (c) 2012 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/feature_info.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <vector>
@@ skipping 160 matching lines @@
       chromium_framebuffer_mixed_samples(false),
       blend_equation_advanced(false),
       blend_equation_advanced_coherent(false),
       ext_texture_rg(false),
       chromium_image_ycbcr_420v(false),
       chromium_image_ycbcr_422(false),
       enable_subscribe_uniform(false),
       emulate_primitive_restart_fixed_index(false),
       ext_render_buffer_format_bgra8888(false),
       ext_multisample_compatibility(false),
-      ext_blend_func_extended(false) {}
+      ext_blend_func_extended(false),
+      ext_read_format_bgra(false) {}
 
 FeatureInfo::Workarounds::Workarounds() :
 #define GPU_OP(type, name) name(false),
     GPU_DRIVER_BUG_WORKAROUNDS(GPU_OP)
 #undef GPU_OP
     max_texture_size(0),
     max_cube_map_texture_size(0),
     max_fragment_uniform_vectors(0),
     max_varying_vectors(0),
     max_vertex_uniform_vectors(0),
@@ skipping 448 matching lines @@
 
   if (enable_texture_format_bgra8888) {
     feature_flags_.ext_texture_format_bgra8888 = true;
     AddExtensionString("GL_EXT_texture_format_BGRA8888");
     validators_.texture_internal_format.AddValue(GL_BGRA_EXT);
     validators_.texture_format.AddValue(GL_BGRA_EXT);
     validators_.texture_unsized_internal_format.AddValue(GL_BGRA_EXT);
   }
 
   if (enable_read_format_bgra) {
+    feature_flags_.ext_read_format_bgra = true;
     AddExtensionString("GL_EXT_read_format_bgra");
     validators_.read_pixel_format.AddValue(GL_BGRA_EXT);
   }
 
   // glGetInteger64v for timestamps is implemented on the client side in a way
   // that it does not depend on a driver-level implementation of
   // glGetInteger64v. The GPUTimer class which implements timer queries can also
   // fallback to an implementation that does not depend on glGetInteger64v on
   // ES2. Thus we can enable GL_EXT_disjoint_timer_query on ES2 contexts even
   // though it does not support glGetInteger64v due to a specification bug.
@@ skipping 773 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu