Update includes of mojo/edk to be fully-qualified instead of relative to third_party/mojo/src.

third_party/mojo/src/mojo/edk/system/mutex.h

Index: third_party/mojo/src/mojo/edk/system/mutex.h
diff --git a/third_party/mojo/src/mojo/edk/system/mutex.h b/third_party/mojo/src/mojo/edk/system/mutex.h
index a78a16bd839a52b8d12a9f4aa93cb7eeb69934d2..67cda57e18f0847253f582dc4a497357253d1ab8 100644
--- a/third_party/mojo/src/mojo/edk/system/mutex.h
+++ b/third_party/mojo/src/mojo/edk/system/mutex.h
@@ -9,14 +9,14 @@
 // still cheats and uses Chromium's lock_impl.*), but eventually we'll want our
 // own and, e.g., add support for non-exclusive (reader) locks.
 
-#ifndef MOJO_EDK_SYSTEM_MUTEX_H_
-#define MOJO_EDK_SYSTEM_MUTEX_H_
+#ifndef THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_MUTEX_H_
+#define THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_MUTEX_H_
 
 #include "base/synchronization/lock_impl.h"
 #include "base/threading/platform_thread.h"
-#include "mojo/edk/system/system_impl_export.h"
-#include "mojo/edk/system/thread_annotations.h"
 #include "mojo/public/cpp/system/macros.h"
+#include "third_party/mojo/src/mojo/edk/system/system_impl_export.h"
+#include "third_party/mojo/src/mojo/edk/system/thread_annotations.h"
 
 namespace mojo {
 namespace system {
@@ -90,4 +90,4 @@ class MOJO_SCOPED_LOCKABLE MOJO_SYSTEM_IMPL_EXPORT MutexLocker {
 }  // namespace system
 }  // namespace mojo
 
-#endif  // MOJO_EDK_SYSTEM_MUTEX_H_
+#endif  // THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_MUTEX_H_