Add CONTEXT_TYPE_OPENGLES2_PEPPER

cc/output/gl_renderer.cc

Index: cc/output/gl_renderer.cc
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index 77ff5cabc38e7c6fb7ed84e173ad7290808e66af..e264257d051c789029fd847bcd9f30dcdaff209b 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -373,7 +373,13 @@ GLRenderer::GLRenderer(RendererClient* client,
       context_caps.gpu.discard_framebuffer;
 
   capabilities_.allow_rasterize_on_demand = true;
-  capabilities_.max_msaa_samples = context_caps.gpu.max_samples;
+
+  // If MSAA is slow, we want this renderer to behave as though MSAA is not
+  // available. Set samples to 0 to achieve this.
+  if (context_caps.gpu.msaa_is_slow)
+    capabilities_.max_msaa_samples = 0;
+  else
+    capabilities_.max_msaa_samples = context_caps.gpu.max_samples;
 
   use_sync_query_ = context_caps.gpu.sync_query;
   use_blend_equation_advanced_ = context_caps.gpu.blend_equation_advanced;