Remove GrContext.h dependence on GrGpu.h

Review URL:  http://codereview.appspot.com/4433096/



git-svn-id: http://skia.googlecode.com/svn/trunk@1227 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrTexture.cpp b/gpu/src/GrTexture.cpp
index e9ec4e6..8ee531c 100644
--- a/gpu/src/GrTexture.cpp
+++ b/gpu/src/GrTexture.cpp
@@ -16,6 +16,7 @@
 
 #include "GrTexture.h"
 #include "GrContext.h"
+#include "GrGpu.h"
 
 bool GrRenderTarget::readPixels(int left, int top, int width, int height,
                                 GrPixelConfig config, void* buffer) {