cc: Use highp precision for texture coords if available and needed

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
@@ skipping 1264 matching lines @@
 
   // Note: order is important here.
   renderer_.reset();
   tile_manager_.reset();
   resource_provider_.reset();
   output_surface_.reset();
 
   if (!output_surface->BindToClient(this))
     return false;
 
-  scoped_ptr<ResourceProvider> resource_provider =
-      ResourceProvider::Create(output_surface.get());
+  scoped_ptr<ResourceProvider> resource_provider = ResourceProvider::Create(
+      output_surface.get(), settings_.highp_threshold_min);
   if (!resource_provider)
     return false;
 
   if (settings_.impl_side_painting) {
     tile_manager_.reset(new TileManager(this,
                                         resource_provider.get(),
                                         settings_.num_raster_threads,
                                         settings_.max_prepaint_tile_distance,
                                         settings_.use_cheapness_estimator,
                                         settings_.use_color_estimator,
                                         settings_.prediction_benchmarking,
                                         rendering_stats_instrumentation_));
   }
 
   if (output_surface->capabilities().has_parent_compositor) {
     renderer_ = DelegatingRenderer::Create(this, output_surface.get(),
                                            resource_provider.get());
   } else if (output_surface->context3d()) {
     renderer_ = GLRenderer::Create(this,
                                    output_surface.get(),
-                                   resource_provider.get());
+                                   resource_provider.get(),
+                                   settings_.highp_threshold_min);
   } else if (output_surface->software_device()) {
     renderer_ = SoftwareRenderer::Create(this,
                                          output_surface.get(),
                                          resource_provider.get());
   }
   if (!renderer_)
     return false;
 
   resource_provider_ = resource_provider.Pass();
   output_surface_ = output_surface.Pass();
@@ skipping 742 matching lines @@
 }
 
 void LayerTreeHostImpl::SetDebugState(const LayerTreeDebugState& debug_state) {
   if (debug_state_.continuous_painting != debug_state.continuous_painting)
     paint_time_counter_->ClearHistory();
 
   debug_state_ = debug_state;
 }
 
 }  // namespace cc