Add flag to enable rendering of text using signed distance fields.

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 <limits>
 
 #include "base/basictypes.h"
@@ skipping 1913 matching lines @@
   output_surface_.reset();
 
   if (!output_surface->BindToClient(this))
     return false;
 
   scoped_ptr<ResourceProvider> resource_provider =
       ResourceProvider::Create(output_surface.get(),
                                shared_bitmap_manager_,
                                settings_.highp_threshold_min,
                                settings_.use_rgba_4444_textures,
-                               settings_.texture_id_allocation_chunk_size);
+                               settings_.texture_id_allocation_chunk_size,
+                               settings_.use_distance_field_text);
 
   if (output_surface->capabilities().deferred_gl_initialization)
     EnforceZeroBudget(true);
 
   bool skip_gl_renderer = false;
   CreateAndSetRenderer(
       output_surface.get(), resource_provider.get(), skip_gl_renderer);
 
   transfer_buffer_memory_limit_ =
       GetMaxTransferBufferUsageBytes(output_surface->context_provider().get());
@@ skipping 1184 matching lines @@
   swap_promise_monitor_.erase(monitor);
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfSetNeedsRedraw() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 }  // namespace cc