Move blob-related code to platform/blob

Source/platform/blob/BlobURL.h

Index: Source/platform/blob/BlobURL.h
diff --git a/Source/core/fileapi/BlobURL.h b/Source/platform/blob/BlobURL.h
similarity index 97%
rename from Source/core/fileapi/BlobURL.h
rename to Source/platform/blob/BlobURL.h
index bb75da23cd3337e1fa520af564b632e429e943e3..0f2e9e3fd1bbca0373ad4965841f8785722959b3 100644
--- a/Source/core/fileapi/BlobURL.h
+++ b/Source/platform/blob/BlobURL.h
@@ -31,6 +31,7 @@
 #ifndef BlobURL_h
 #define BlobURL_h
 
+#include "platform/PlatformExport.h"
 #include "wtf/Forward.h"
 
 namespace WebCore {
@@ -45,7 +46,7 @@ class SecurityOrigin;
 // When loading blobs via ResourceHandle or when reading blobs via FileReader
 // the loader conducts security checks that examine the origin of host page
 // encoded in the blob url.
-class BlobURL {
+class PLATFORM_EXPORT BlobURL {
 public:
     static KURL createPublicURL(SecurityOrigin*);
     static String getOrigin(const KURL&);