fuchsia: base_unittests (mostly) compiling

base/trace_event/process_memory_dump.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/trace_event/process_memory_dump.h"
 
 #include <errno.h>
 
 #include <vector>
 
@@ skipping 98 matching lines @@
     for (size_t i = 0; i < page_count; i++) {
       vec[i].VirtualAddress =
           reinterpret_cast<void*>(chunk_start + i * page_size);
     }
     DWORD vec_size = static_cast<DWORD>(
         page_count * sizeof(PSAPI_WORKING_SET_EX_INFORMATION));
     failure = !QueryWorkingSetEx(GetCurrentProcess(), vec.get(), vec_size);
 
     for (size_t i = 0; i < page_count; i++)
       resident_page_count += vec[i].VirtualAttributes.Valid;
+#elif defined(OS_FUCHSIA)
+    // TODO(fuchsia): Port, see https://crbug.com/706592.
+    ALLOW_UNUSED_LOCAL(chunk_start);
+    ALLOW_UNUSED_LOCAL(page_count);
 #elif defined(OS_POSIX)
     int error_counter = 0;
     int result = 0;
     // HANDLE_EINTR tries for 100 times. So following the same pattern.
     do {
       result =
 #if defined(OS_AIX)
           mincore(reinterpret_cast<char*>(chunk_start), chunk_size,
                   reinterpret_cast<char*>(vec.get()));
 #else
@@ skipping 245 matching lines @@
 
 MemoryAllocatorDump* ProcessMemoryDump::GetBlackHoleMad() {
   DCHECK(is_black_hole_non_fatal_for_testing_);
   if (!black_hole_mad_)
     black_hole_mad_.reset(new MemoryAllocatorDump("discarded", this));
   return black_hole_mad_.get();
 }
 
 }  // namespace trace_event
 }  // namespace base