Fix up PathProvider on the Mac for FILE_MODULE.

ui/gfx/gl/gl_implementation_mac.cc

 // Copyright (c) 2011 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/base_paths.h"
 #include "base/file_path.h"
 #include "base/logging.h"
+#include "base/mac/foundation_util.h"
 #include "base/native_library.h"
 #include "base/path_service.h"
 #include "ui/gfx/gl/gl_bindings.h"
 #include "ui/gfx/gl/gl_implementation.h"
 
 namespace gfx {
 namespace {
 const char kOpenGLFrameworkPath[] =
     "/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL";
 }  // namespace anonymous
 
 bool InitializeGLBindings(GLImplementation implementation) {
   // Prevent reinitialization with a different implementation. Once the gpu
   // unit tests have initialized with kGLImplementationMock, we don't want to
   // later switch to another GL implementation.
   if (GetGLImplementation() != kGLImplementationNone)
     return true;
 
   switch (implementation) {
     case kGLImplementationOSMesaGL: {
-      FilePath module_path;
-      if (!PathService::Get(base::DIR_MODULE, &module_path)) {
+      // osmesa.so is located in the build directory. This code path is only
+      // valid in a developer build environment.
+      FilePath exe_path;
+      if (!PathService::Get(base::FILE_EXE, &exe_path)) {
         LOG(ERROR) << "PathService::Get failed.";
         return false;
       }
+      FilePath bundle_path = base::mac::GetAppBundlePath(exe_path);
+      FilePath build_dir_path = bundle_path.DirName();
+      FilePath osmesa_path = build_dir_path.Append("osmesa.so");
 
       // When using OSMesa, just use OSMesaGetProcAddress to find entry points.
-      base::NativeLibrary library = base::LoadNativeLibrary(
-          module_path.Append("osmesa.so"), NULL);
+      base::NativeLibrary library = base::LoadNativeLibrary(osmesa_path, NULL);
       if (!library) {
-        VLOG(1) << "osmesa.so not found";
+        LOG(ERROR) << "osmesa.so not found at " << osmesa_path.value();
         return false;
       }
 
       GLGetProcAddressProc get_proc_address =
           reinterpret_cast<GLGetProcAddressProc>(
               base::GetFunctionPointerFromNativeLibrary(
                   library, "OSMesaGetProcAddress"));
       if (!get_proc_address) {
         LOG(ERROR) << "OSMesaGetProcAddress not found.";
         base::UnloadNativeLibrary(library);
@@ skipping 34 matching lines @@
 
   return true;
 }
 
 void InitializeDebugGLBindings() {
   InitializeDebugGLBindingsGL();
   InitializeDebugGLBindingsOSMESA();
 }
 
 }  // namespace gfx