Revert "Chromium changes to statically link ffmpeg."

media/base/media_win.cc

Index: media/base/media_win.cc
diff --git a/media/base/media_win.cc b/media/base/media_win.cc
new file mode 100644
index 0000000000000000000000000000000000000000..03d78b1d454329bb0c8a8f648b3f0116ddcba75e
--- /dev/null
+++ b/media/base/media_win.cc
@@ -0,0 +1,56 @@
+// 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 "media/base/media.h"
+
+#include <windows.h>
+#if defined(_WIN32_WINNT_WIN8)
+// The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h.
+#undef FACILITY_VISUALCPP
+#endif
+#include <delayimp.h>
+
+#include "base/files/file_path.h"
+#include "base/metrics/sparse_histogram.h"
+#include "media/ffmpeg/ffmpeg_common.h"
+
+#pragma comment(lib, "delayimp.lib")
+
+namespace media {
+namespace internal {
+
+bool InitializeMediaLibraryInternal(const base::FilePath& module_dir) {
+  // LoadLibraryEx(..., LOAD_WITH_ALTERED_SEARCH_PATH) cannot handle
+  // relative path.
+  if (!module_dir.IsAbsolute())
+    return false;
+
+  // Use alternate DLL search path so we don't load dependencies from the
+  // system path.  Refer to http://crbug.com/35857
+  static const char kFFmpegDLL[] = "ffmpegsumo.dll";
+  HMODULE lib = ::LoadLibraryEx(
+      module_dir.AppendASCII(kFFmpegDLL).value().c_str(), NULL,
+      LOAD_WITH_ALTERED_SEARCH_PATH);
+
+  bool initialized = (lib != NULL);
+
+  // TODO(scherkus): Remove all the bool-ness from these functions as we no
+  // longer support disabling HTML5 media at runtime. http://crbug.com/440892
+  if (!initialized) {
+    UMA_HISTOGRAM_SPARSE_SLOWLY("Media.Initialize.Windows", GetLastError());
+    return false;
+  }
+
+  // VS2013 has a bug where FMA3 instructions will be executed on CPUs that
+  // support them despite them being disabled at the OS level, causing illegal
+  // instruction exceptions. Because Web Audio's FFT code *might* run before
+  // HTML5 media code, call av_log_set_level() to force library initialziation.
+  // See http://crbug.com/440892 for details.
+  av_log_set_level(AV_LOG_QUIET);
+
+  return initialized;
+}
+
+}  // namespace internal
+}  // namespace media