fix doxygen brief in subzero header files

src/IceBrowserCompileServer.cpp

 //===- subzero/src/IceBrowserCompileServer.cpp - Browser compile server ---===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
-/// This file defines the browser-based compile server.
+/// \brief Defines the browser-based compile server.
 ///
 //===----------------------------------------------------------------------===//
 
 // Can only compile this with the NaCl compiler (needs irt.h, and the
 // unsandboxed LLVM build using the trusted compiler does not have irt.h).
 #if PNACL_BROWSER_TRANSLATOR
 
 #include "IceBrowserCompileServer.h"
 #include "llvm/Support/QueueStreamer.h"
 
@@ skipping 167 matching lines @@
     this->getCompiler().run(ExtraFlags, *Ctx.get(),
                             // Retain original reference, but the compiler
                             // (LLVM's MemoryObject) wants to handle deletion.
                             std::unique_ptr<llvm::DataStreamer>(InputStream));
   });
 }
 
 } // end of namespace Ice
 
 #endif // PNACL_BROWSER_TRANSLATOR