Add desired width & height to drawContext (as opposed to using the width & height of the RT)

src/gpu/GrDrawingManager.cpp

Index: src/gpu/GrDrawingManager.cpp
diff --git a/src/gpu/GrDrawingManager.cpp b/src/gpu/GrDrawingManager.cpp
index 75ee0db7c8979a41bc24c3af2d9ef1efa17be952..a27268c5cff4f78f7d62ee113d48866385fe5f1d 100644
--- a/src/gpu/GrDrawingManager.cpp
+++ b/src/gpu/GrDrawingManager.cpp
@@ -174,7 +174,8 @@ GrPathRenderer* GrDrawingManager::getPathRenderer(const GrPathRenderer::CanDrawP
     return pr;
 }
 
-sk_sp<GrDrawContext> GrDrawingManager::drawContext(sk_sp<GrRenderTarget> rt,
+sk_sp<GrDrawContext> GrDrawingManager::drawContext(int width, int height, 
+                                                   sk_sp<GrRenderTarget> rt,
                                                    const SkSurfaceProps* surfaceProps) {
     if (this->wasAbandoned()) {
         return nullptr;
@@ -191,13 +192,17 @@ sk_sp<GrDrawContext> GrDrawingManager::drawContext(sk_sp<GrRenderTarget> rt,
         GrStencilAttachment* sb = fContext->resourceProvider()->attachStencilAttachment(rt.get());
         if (sb) {
             return sk_sp<GrDrawContext>(new GrPathRenderingDrawContext(
-                                                        fContext, this, std::move(rt), 
+                                                        fContext, this,
+                                                        width, height,
+                                                        std::move(rt), 
                                                         surfaceProps,
                                                         fContext->getAuditTrail(), fSingleOwner));
         }
     }
 
-    return sk_sp<GrDrawContext>(new GrDrawContext(fContext, this, std::move(rt), surfaceProps,
+    return sk_sp<GrDrawContext>(new GrDrawContext(fContext, this,
+                                                  width, height,
+                                                  std::move(rt), surfaceProps,
                                                   fContext->getAuditTrail(),
                                                   fSingleOwner));
 }