Ignore GL_ANGLE_framebuffer_multisample on Android.

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/string_number_conversions.h"
@@ skipping 494 matching lines @@
     texture_format_validators_[GL_LUMINANCE_ALPHA].AddValue(GL_HALF_FLOAT_OES);
     validators_.pixel_type.AddValue(GL_HALF_FLOAT_OES);
     validators_.read_pixel_type.AddValue(GL_HALF_FLOAT_OES);
     AddExtensionString("GL_OES_texture_half_float");
     if (enable_texture_half_float_linear) {
       AddExtensionString("GL_OES_texture_half_float_linear");
     }
   }
 
   // Check for multisample support
+  bool ext_has_multisample = ext.Have("GL_EXT_framebuffer_multisample");
+  if (!is_qualcomm || feature_flags_.disable_workarounds) {
+    // Some Android Qualcomm drivers falsely report this ANGLE extension string.
+    // See http://crbug.com/165736
+    ext_has_multisample |= ext.Have("GL_ANGLE_framebuffer_multisample");
+  }
   if (!disallowed_features_.multisampling &&
       ext.Desire("GL_CHROMIUM_framebuffer_multisample") &&
-      (ext.Have("GL_EXT_framebuffer_multisample") ||
-       ext.Have("GL_ANGLE_framebuffer_multisample"))) {
+      ext_has_multisample) {
     feature_flags_.chromium_framebuffer_multisample = true;
     validators_.frame_buffer_target.AddValue(GL_READ_FRAMEBUFFER_EXT);
     validators_.frame_buffer_target.AddValue(GL_DRAW_FRAMEBUFFER_EXT);
     validators_.g_l_state.AddValue(GL_READ_FRAMEBUFFER_BINDING_EXT);
     validators_.g_l_state.AddValue(GL_MAX_SAMPLES_EXT);
     validators_.render_buffer_parameter.AddValue(GL_RENDERBUFFER_SAMPLES_EXT);
     AddExtensionString("GL_CHROMIUM_framebuffer_multisample");
   }
 
   if (ext.HaveAndDesire("GL_OES_depth24") ||
@@ skipping 185 matching lines @@
   if (extensions_.find(str) == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu