Add a "Max. MSAA samples" entry to chrome://gpu.

gpu/config/gpu_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/config/gpu_info.h"
 
 namespace {
 
 void EnumerateGPUDevice(gpu::GPUInfo::Enumerator* enumerator,
                         const gpu::GPUInfo::GPUDevice& device) {
@@ skipping 61 matching lines @@
     bool lenovo_dcute;
     Version display_link_version;
     GPUDevice gpu;
     std::vector<GPUDevice> secondary_gpus;
     uint64 adapter_luid;
     std::string driver_vendor;
     std::string driver_version;
     std::string driver_date;
     std::string pixel_shader_version;
     std::string vertex_shader_version;
+    std::string max_msaa_samples;

[Ken Russell (switch to Gerrit), 2015/04/07 22:13:27]

Please enumerate this new field further down in GPUInfo::EnumerateFields -- this
will expose it to Telemetry and the GPU tests in case that's useful later -- and
update gpu_info_unittest too. Search for gl_ws_vendor as an example of another
similarly handled field.

[Stephen White, 2015/04/08 12:19:35]

Done.

     std::string machine_model_name;
     std::string machine_model_version;
     std::string gl_version_string;
     std::string gl_vendor;
     std::string gl_renderer;
     std::string gl_extensions;
     std::string gl_ws_vendor;
     std::string gl_ws_version;
     std::string gl_ws_extensions;
     uint32 gl_reset_notification_strategy;
@@ skipping 67 matching lines @@
   // TODO(kbr): add dx_diagnostics on Windows.
   for (size_t ii = 0; ii < video_encode_accelerator_supported_profiles.size();
        ++ii) {
     EnumerateVideoEncodeAcceleratorSupportedProfile(
         enumerator, video_encode_accelerator_supported_profiles[ii]);
   }
   enumerator->EndAuxAttributes();
 }
 
 }  // namespace gpu