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

gpu/config/gpu_info.cc

Index: gpu/config/gpu_info.cc
diff --git a/gpu/config/gpu_info.cc b/gpu/config/gpu_info.cc
index 2cba5d82a3f38af0740dc816f8b8e927ac0de282..4a1100627f192b70eca66112f07498c57682aeac 100644
--- a/gpu/config/gpu_info.cc
+++ b/gpu/config/gpu_info.cc
@@ -79,6 +79,7 @@ void GPUInfo::EnumerateFields(Enumerator* enumerator) const {
     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;