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

cc/resources/resource_provider.h

Index: cc/resources/resource_provider.h
diff --git a/cc/resources/resource_provider.h b/cc/resources/resource_provider.h
index cf1bb9b53f29624f205646aa34763611998e60ee..169222d5524589f1482aea9055bf493173318035 100644
--- a/cc/resources/resource_provider.h
+++ b/cc/resources/resource_provider.h
@@ -75,7 +75,8 @@ class CC_EXPORT ResourceProvider {
       SharedBitmapManager* shared_bitmap_manager,
       int highp_threshold_min,
       bool use_rgba_4444_texture_format,
-      size_t id_allocation_chunk_size);
+      size_t id_allocation_chunk_size,
+      bool use_distance_field_text);
   virtual ~ResourceProvider();
 
   void InitializeSoftware();
@@ -480,6 +481,10 @@ class CC_EXPORT ResourceProvider {
                        ResourceProvider* resource_provider);
     virtual ~DirectRasterBuffer();
 
+    void SetUseDistanceFieldText(bool use_distance_field_text) {
+      use_distance_field_text_ = use_distance_field_text;
+    }
+
    protected:
     virtual SkCanvas* DoLockForWrite() OVERRIDE;
     virtual bool DoUnlockForWrite() OVERRIDE;
@@ -488,6 +493,7 @@ class CC_EXPORT ResourceProvider {
    private:
     skia::RefPtr<SkSurface> surface_;
     uint32_t surface_generation_id_;
+    bool use_distance_field_text_;

[reveman, 2014/05/05 21:15:18]

Can this be "const bool" and set by the ctor instead of having
SetUseDistanceFieldText?

[jvanverth1, 2014/05/06 14:27:22]

Done.

 
     DISALLOW_COPY_AND_ASSIGN(DirectRasterBuffer);
   };
@@ -566,7 +572,8 @@ class CC_EXPORT ResourceProvider {
                    SharedBitmapManager* shared_bitmap_manager,
                    int highp_threshold_min,
                    bool use_rgba_4444_texture_format,
-                   size_t id_allocation_chunk_size);
+                   size_t id_allocation_chunk_size,
+                   bool use_distance_field_text);
 
   void CleanUpGLIfNeeded();
 
@@ -652,6 +659,8 @@ class CC_EXPORT ResourceProvider {
 
   bool use_sync_query_;
 
+  bool use_distance_field_text_;
+
   DISALLOW_COPY_AND_ASSIGN(ResourceProvider);
 };