Workaround for Intel 6xxx clear to 0/1 bug

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index 8a114b4fe05ffa443364cd19e0957ca2d92673fc..0bb228ddacc02c91a7b4523ecaefa654ff8d67f1 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -17,6 +17,7 @@
 #include "gpu/command_buffer/service/texture_definition.h"
 #include "gpu/config/gpu_switches.h"
 #include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_context.h"
 #include "ui/gl/gl_fence.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_switches.h"
@@ -557,6 +558,13 @@ void FeatureInfo::InitializeFeatures() {
         GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT);
   }
 
+  // Pass some workarounds to ui/gl so that we can apply it in gl api.
+  gl::GLWorkarounds gl_workarounds;
+  if (workarounds_.clear_to_zero_or_one_broken) {
+    gl_workarounds.clear_to_zero_or_one_broken = true;
+  }
+  gl::GLContext::SetGLWorkarounds(gl_workarounds);
+
   // Check if we should support GL_OES_packed_depth_stencil and/or
   // GL_GOOGLE_depth_texture / GL_CHROMIUM_depth_texture.
   //