Add isMultisampled() to GrRenderTarget. Cleanup MSAA vs smooth lines logic in GrGpuGL.

Skia issue: 178

Review URL: http://codereview.appspot.com/4382041/



git-svn-id: http://skia.googlecode.com/svn/trunk@1067 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrContext.cpp b/gpu/src/GrContext.cpp
index a0f5c51..b17a238 100644
--- a/gpu/src/GrContext.cpp
+++ b/gpu/src/GrContext.cpp
@@ -270,8 +270,10 @@
 GrRenderTarget* GrContext::createPlatformRenderTarget(
                                                 intptr_t platformRenderTarget,
                                                 int stencilBits,
+                                                bool isMultisampled,
                                                 int width, int height) {
     return fGpu->createPlatformRenderTarget(platformRenderTarget, stencilBits,
+                                            isMultisampled,
                                             width, height);
 }