Stop using LOG macros in favor of RTC_ prefixed macros.

This CL has been generated with the following script:

for m in PLOG \
  LOG_TAG \
  LOG_GLEM \
  LOG_GLE_EX \
  LOG_GLE \
  LAST_SYSTEM_ERROR \
  LOG_ERRNO_EX \
  LOG_ERRNO \
  LOG_ERR_EX \
  LOG_ERR \
  LOG_V \
  LOG_F \
  LOG_T_F \
  LOG_E \
  LOG_T \
  LOG_CHECK_LEVEL_V \
  LOG_CHECK_LEVEL \
  LOG
do
  git grep -l $m | xargs sed -i "s,\b$m\b,RTC_$m,g"
done
git checkout rtc_base/logging.h
git cl format

Bug: webrtc:8452
Change-Id: I1a53ef3e0a5ef6e244e62b2e012b864914784600
Reviewed-on: https://webrtc-review.googlesource.com/21325
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20617}
diff --git a/rtc_base/win32window.cc b/rtc_base/win32window.cc
index 9e9c839..d71c68e 100644
--- a/rtc_base/win32window.cc
+++ b/rtc_base/win32window.cc
@@ -40,7 +40,7 @@
                            GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
                            reinterpret_cast<LPCWSTR>(&Win32Window::WndProc),
                            &instance_)) {
-      LOG_GLE(LS_ERROR) << "GetModuleHandleEx failed";
+      RTC_LOG_GLE(LS_ERROR) << "GetModuleHandleEx failed";
       return false;
     }
 
@@ -53,7 +53,7 @@
     wcex.lpszClassName = kWindowBaseClassName;
     window_class_ = ::RegisterClassEx(&wcex);
     if (!window_class_) {
-      LOG_GLE(LS_ERROR) << "RegisterClassEx failed";
+      RTC_LOG_GLE(LS_ERROR) << "RegisterClassEx failed";
       return false;
     }
   }
@@ -113,7 +113,7 @@
     if (WM_DESTROY == uMsg) {
       for (HWND child = ::GetWindow(hwnd, GW_CHILD); child;
            child = ::GetWindow(child, GW_HWNDNEXT)) {
-        LOG(LS_INFO) << "Child window: " << static_cast<void*>(child);
+        RTC_LOG(LS_INFO) << "Child window: " << static_cast<void*>(child);
       }
     }
     if (WM_NCDESTROY == uMsg) {