Teach GPU command buffer whether a context is webgl.

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 <set>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 505 matching lines @@
     validators_.render_buffer_format.AddValue(GL_BGRA8_EXT);
   }
 
   if (extensions.Contains("GL_OES_rgb8_rgba8") || gfx::HasDesktopGLFeatures()) {
     AddExtensionString("GL_OES_rgb8_rgba8");
     validators_.render_buffer_format.AddValue(GL_RGB8_OES);
     validators_.render_buffer_format.AddValue(GL_RGBA8_OES);
   }
 
   // Check if we should allow GL_OES_texture_npot
-  if (gl_version_info_->is_es3 ||
-      gl_version_info_->is_desktop_core_profile ||
-      extensions.Contains("GL_ARB_texture_non_power_of_two") ||
-      extensions.Contains("GL_OES_texture_npot")) {
+  if (!disallowed_features_.npot_support &&
+      (gl_version_info_->is_es3 ||
+       gl_version_info_->is_desktop_core_profile ||
+       extensions.Contains("GL_ARB_texture_non_power_of_two") ||
+       extensions.Contains("GL_OES_texture_npot"))) {
     AddExtensionString("GL_OES_texture_npot");
     feature_flags_.npot_ok = true;
   }
 
   // Check if we should allow GL_OES_texture_float, GL_OES_texture_half_float,
   // GL_OES_texture_float_linear, GL_OES_texture_half_float_linear
   bool enable_texture_float = false;
   bool enable_texture_float_linear = false;
   bool enable_texture_half_float = false;
   bool enable_texture_half_float_linear = false;
@@ skipping 598 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu