Prevent loading libffmpegsumo.so to python (autotests) process.

content/test/content_test_suite_base.cc

 // Copyright (c) 2012 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 "content/public/test/content_test_suite_base.h"
 
+#if defined(OS_CHROMEOS)
+#include <stdio.h>
+#include <unistd.h>
+#endif  // defined(OS_CHROMEOS)
+
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/test/test_suite.h"
 #include "content/common/url_schemes.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_paths.h"
 #include "media/base/media.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/compositor/compositor_setup.h"
 
 namespace content {
 
 ContentTestSuiteBase::ContentTestSuiteBase(int argc, char** argv)
     : base::TestSuite(argc, argv) {
 }
 
+static bool IsCrosPythonProcess() {
+#if defined(OS_CHROMEOS)
+  char buf[80];
+  int num_read = readlink("/proc/self/exe", buf, sizeof(buf) - 1);

[jam, 2012/07/20 21:46:16]

this is a layering violation, since content shouldn't know about chromeos paths.

since ContentTestSuiteBase is inherited by Chrome's test suite, move this code
there, and you can pass a boolean to this Initialize method to say whether to
suppress initializing the media library.

[glotov, 2012/07/20 23:47:29]

Adding a parameter to the Initialize() function will force changing its
descendants, so I tried to avoid it by moving media library init to the Chrome's
class. Running unittests to make sure it works... 

On 2012/07/20 21:46:16, John Abd-El-Malek wrote:

+  if (num_read == -1)
+    return false;
+  buf[num_read] = 0;
+  const char kPythonPrefix[] = "/python";
+  return !strncmp(strrchr(buf, '/'), kPythonPrefix, sizeof(kPythonPrefix) - 1);
+#endif  // defined(OS_CHROMEOS)
+  return false;
+}
+
 void ContentTestSuiteBase::Initialize() {
   base::TestSuite::Initialize();
-  media::InitializeMediaLibraryForTesting();
+
+  // Initialize media library for unit tests. If we are auto test
+  // (python process under chrome os), media library will be loaded to
+  // chrome directly so don't load it here.
+  if (!IsCrosPythonProcess())
+    media::InitializeMediaLibraryForTesting();
 
   scoped_ptr<ContentClient> client_for_init(CreateClientForInitialization());
   SetContentClient(client_for_init.get());
   RegisterContentSchemes(false);
   SetContentClient(NULL);
 
   RegisterPathProvider();
   ui::RegisterPathProvider();
 
   // Mock out the compositor on platforms that use it.
   ui::SetupTestCompositor();
 }
 
 }  // namespace content