Remove dependency from //mojo to //crypto

mojo/edk/embedder/simple_platform_support.cc

Index: mojo/edk/embedder/simple_platform_support.cc
diff --git a/mojo/edk/embedder/simple_platform_support.cc b/mojo/edk/embedder/simple_platform_support.cc
index 5024087075956a354191a44ac1b19ccd5c5a82c8..4207120fc7b91601c743c85f22f81a89e53b36f2 100644
--- a/mojo/edk/embedder/simple_platform_support.cc
+++ b/mojo/edk/embedder/simple_platform_support.cc
@@ -4,7 +4,7 @@
 
 #include "mojo/edk/embedder/simple_platform_support.h"
 
-#include "crypto/random.h"
+#include "base/rand_util.h"
 #include "mojo/edk/embedder/simple_platform_shared_buffer.h"
 
 namespace mojo {
@@ -12,7 +12,7 @@ namespace embedder {
 
 void SimplePlatformSupport::GetCryptoRandomBytes(void* bytes,
                                                  size_t num_bytes) {
-  crypto::RandBytes(bytes, num_bytes);
+  base::RandBytes(bytes, num_bytes);
 }
 
 PlatformSharedBuffer* SimplePlatformSupport::CreateSharedBuffer(