Add GR_DLL builds to Ganesh (minimal exports for Chrome multi-dll for now).

Review URL:  http://codereview.appspot.com/4301044/




git-svn-id: http://skia.googlecode.com/svn/trunk@970 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGLInterface.cpp b/gpu/src/GrGLInterface.cpp
index 0bddd98..cc2c7bf 100644
--- a/gpu/src/GrGLInterface.cpp
+++ b/gpu/src/GrGLInterface.cpp
@@ -350,11 +350,11 @@
 
 }  // unnamed namespace
 
-void GrGLSetGLInterface(GrGLInterface* gl_interface) {
+GR_API void GrGLSetGLInterface(GrGLInterface* gl_interface) {
     gGLInterface = gl_interface;
 }
 
-GrGLInterface* GrGLGetGLInterface() {
+GR_API GrGLInterface* GrGLGetGLInterface() {
     return gGLInterface;
 }