Blacklist MSAA for GPU Raster on Intel GPUs

Intel GPUs have unacceptable performance for GPU raster when MSAA is
enabled. This has been tested on recent Intel GPUs on CrOS, Mac, and
Windows. Given this we’re adding a workaround for Intel GPUs which will
disable MSAA for GPU raster.

We don’t want to impact WebGL, so this workaround specifically targets
non-WebGL contexts.

I’ve updated FeatureInfo’s Initialize function to accept the context
type, which allows us to customize features based on webgl/non-webgl.

I’ve also changed the secondary version of Initialize, which takes no
arguments, to be InitializeForTesting, as this function is only called
in tests.

BUG=527565
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1374043005

Cr-Commit-Position: refs/heads/master@{#351904}

1 files changed, 1 insertions, 1 deletions

diff --git a/gpu/command_buffer/tests/gl_unittest.cc b/gpu/command_buffer/tests/gl_unittest.cc
index 165d3b1..70d35df 100644
--- a/gpu/command_buffer/tests/gl_unittest.cc
+++ b/gpu/command_buffer/tests/gl_unittest.cc
@@ -91,7 +91,7 @@ TEST_F(GLTest, SimpleShader) {
 
 TEST_F(GLTest, FeatureFlagsMatchCapabilities) {
   scoped_refptr<gles2::FeatureInfo> features = new gles2::FeatureInfo;
-  EXPECT_TRUE(features->Initialize());
+  EXPECT_TRUE(features->InitializeForTesting());
   const auto& caps = gl_.GetCapabilities();
   const auto& flags = features->feature_flags();
   EXPECT_EQ(caps.egl_image_external, flags.oes_egl_image_external);