Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

rtc_base/macutils.cc

@@ -0,0 +1,127 @@
+/*
+ *  Copyright 2007 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <cstring>
+#include <memory>
+#include <sstream>
+
+#include <sys/utsname.h>
+
+#include "webrtc/rtc_base/checks.h"
+#include "webrtc/rtc_base/logging.h"
+#include "webrtc/rtc_base/macutils.h"
+#include "webrtc/rtc_base/stringutils.h"
+
+namespace rtc {
+
+///////////////////////////////////////////////////////////////////////////////
+
+bool ToUtf8(const CFStringRef str16, std::string* str8) {
+  if ((nullptr == str16) || (nullptr == str8)) {
+    return false;
+  }
+  size_t maxlen = CFStringGetMaximumSizeForEncoding(CFStringGetLength(str16),
+                                                    kCFStringEncodingUTF8) + 1;
+  std::unique_ptr<char[]> buffer(new char[maxlen]);
+  if (!buffer || !CFStringGetCString(str16, buffer.get(), maxlen,
+                                     kCFStringEncodingUTF8)) {
+    return false;
+  }
+  str8->assign(buffer.get());
+  return true;
+}
+
+bool ToUtf16(const std::string& str8, CFStringRef* str16) {
+  if (nullptr == str16) {
+    return false;
+  }
+  *str16 = CFStringCreateWithBytes(kCFAllocatorDefault,
+                                   reinterpret_cast<const UInt8*>(str8.data()),
+                                   str8.length(), kCFStringEncodingUTF8,
+                                   false);
+  return nullptr != *str16;
+}
+
+void DecodeFourChar(UInt32 fc, std::string* out) {
+  std::stringstream ss;
+  ss << '\'';
+  bool printable = true;
+  for (int i = 3; i >= 0; --i) {
+    char ch = (fc >> (8 * i)) & 0xFF;
+    if (isprint(static_cast<unsigned char>(ch))) {
+      ss << ch;
+    } else {
+      printable = false;
+      break;
+    }
+  }
+  if (printable) {
+    ss << '\'';
+  } else {
+    ss.str("");
+    ss << "0x" << std::hex << fc;
+  }
+  out->append(ss.str());
+}
+
+static bool GetOSVersion(int* major, int* minor, int* bugfix) {
+  RTC_DCHECK(major);
+  RTC_DCHECK(minor);
+  RTC_DCHECK(bugfix);
+  struct utsname uname_info;
+  if (uname(&uname_info) != 0)
+    return false;
+
+  if (strcmp(uname_info.sysname, "Darwin") != 0)
+    return false;
+  *major = 10;
+
+  // The market version of macOS is always 4 lower than the internal version.
+  int minor_version = atoi(uname_info.release);
+  RTC_CHECK(minor_version >= 6);
+  *minor = minor_version - 4;
+
+  const char* dot = ::strchr(uname_info.release, '.');
+  if (!dot)
+    return false;
+  *bugfix = atoi(dot + 1);
+  return true;
+}
+
+MacOSVersionName GetOSVersionName() {
+  int major = 0, minor = 0, bugfix = 0;
+  if (!GetOSVersion(&major, &minor, &bugfix)) {
+    return kMacOSUnknown;
+  }
+  if (major > 10) {
+    return kMacOSNewer;
+  }
+  if ((major < 10) || (minor < 3)) {
+    return kMacOSOlder;
+  }
+  switch (minor) {
+    case 3:
+      return kMacOSPanther;
+    case 4:
+      return kMacOSTiger;
+    case 5:
+      return kMacOSLeopard;
+    case 6:
+      return kMacOSSnowLeopard;
+    case 7:
+      return kMacOSLion;
+    case 8:
+      return kMacOSMountainLion;
+    case 9:
+      return kMacOSMavericks;
+  }
+  return kMacOSNewer;
+}
+}  // namespace rtc