Rewrite GrTextureMaker to disentangle bitmap case from base class and give GPU object a say in what…

src/gpu/GrGpu.h

Index: src/gpu/GrGpu.h
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index d8e5681de150eca89714c9d9a8a831772f1b5b35..4714d36913fa3da4a435ea6e040fbabaf512f544 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -11,6 +11,7 @@
 #include "GrPipelineBuilder.h"
 #include "GrProgramDesc.h"
 #include "GrStencil.h"
+#include "GrTextureParamsAdjuster.h"
 #include "GrXferProcessor.h"
 #include "SkPath.h"
 
@@ -378,6 +379,13 @@ public:
     // clears target's entire stencil buffer to 0
     virtual void clearStencil(GrRenderTarget* target) = 0;
 
+
+    // Determines whether a copy of a texture must be made in order to be compatible with
+    // a given GrTextureParams. If so, the width, height and filter used for the copy are
+    // output via the CopyParams.
+    bool makeCopyForTextureParams(int width, int height, const GrTextureParams&,
+                                 GrTextureParamsAdjuster::CopyParams*) const;
+
     // This is only to be used in GL-specific tests.
     virtual const GrGLContext* glContextForTesting() const { return nullptr; }