added support for PLS path rendering

src/gpu/GrGpu.h

Index: src/gpu/GrGpu.h
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index 3eaa3fc035e27ebc821b16825f26d24443e02f8c..67f6c8ef664c1447c335be660d549050522bbb97 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -35,6 +35,8 @@ class GrTransferBuffer;
 class GrVertexBuffer;
 class GrVertices;
 
+//#define ENABLE_PLS

[bsalomon, 2016/01/13 19:15:34]

Since this macro spans multiple files maybe prefix with GR_ and define in
GrConfig.h

#if !defined(GR_ENABLE_PLS)
    #define GR_ENABLE_PLS 0
#endif

In Gr-land we tend to define boolean macros to 0 or 1 rather than have them
defined or not defined.

+
 class GrGpu : public SkRefCnt {
 public:
     /**
@@ -345,6 +347,9 @@ public:
 
     void draw(const DrawArgs&, const GrVertices&);
 
+    // Called by drawtarget when flushing. Provides a hook for working around an ARM PLS driver bug.
+    virtual void performFlushWorkaround();
+
     ///////////////////////////////////////////////////////////////////////////
     // Debugging and Stats