Move vertex and fragment shader uniform vector workarounds to gpu driver bug list.

gpu/command_buffer/service/context_group.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/command_buffer/service/context_group.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 205 matching lines @@
   if (!CheckGLFeatureU(
       kMinFragmentUniformVectors, &max_fragment_uniform_vectors_) ||
       !CheckGLFeatureU(kMinVaryingVectors, &max_varying_vectors_) ||
       !CheckGLFeatureU(
       kMinVertexUniformVectors, &max_vertex_uniform_vectors_)) {
     LOG(ERROR) << "ContextGroup::Initialize failed because too few "
                << "uniforms or varyings supported.";
     return false;
   }
 
-  // TODO(gman): Use workarounds similar to max_texture_size above to implement.
-  if (gfx::GetGLImplementation() == gfx::kGLImplementationOSMesaGL) {
-    // Some shaders in Skia needed more than the min.
-    max_fragment_uniform_vectors_ =
-       std::min(static_cast<uint32>(kMinFragmentUniformVectors * 2),
-                max_fragment_uniform_vectors_);
-    max_varying_vectors_ =
-       std::min(static_cast<uint32>(kMinVaryingVectors * 2),
-                max_varying_vectors_);
+  // Some shaders in Skia need more than the min available vertex and
+  // fragment shader uniform vectors in case of OSMesa GL Implementation
+  if (feature_info_->workarounds().max_fragment_uniform_vectors) {
+    max_fragment_uniform_vectors_ = std::min(
+        max_fragment_uniform_vectors_,
+        static_cast<uint32>(
+            feature_info_->workarounds().max_fragment_uniform_vectors));
+  }
+  if (feature_info_->workarounds().max_varying_vectors) {
+    max_varying_vectors_ = std::min(
+        max_varying_vectors_,
+        static_cast<uint32>(feature_info_->workarounds().max_varying_vectors));
+  }
+  if (feature_info_->workarounds().max_vertex_uniform_vectors) {
     max_vertex_uniform_vectors_ =
-       std::min(static_cast<uint32>(kMinVertexUniformVectors * 2),
-                max_vertex_uniform_vectors_);
+        std::min(max_vertex_uniform_vectors_,
+                 static_cast<uint32>(
+                     feature_info_->workarounds().max_vertex_uniform_vectors));
   }
 
   program_manager_.reset(new ProgramManager(
       program_cache_, max_varying_vectors_));
 
   if (!texture_manager_->Initialize()) {
     LOG(ERROR) << "Context::Group::Initialize failed because texture manager "
                << "failed to initialize.";
     return false;
   }
@@ skipping 133 matching lines @@
     GLenum pname, GLint min_required, uint32* v) {
   uint32 value = 0;
   GetIntegerv(pname, &value);
   bool result = CheckGLFeatureU(min_required, &value);
   *v = value;
   return result;
 }
 
 }  // namespace gles2
 }  // namespace gpu