clang-format all pdfium code.

core/src/fxcrt/fx_basic_plex.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../include/fxcrt/fx_memory.h"
 #include "plex.h"
 
-CFX_Plex* CFX_Plex::Create(CFX_Plex*& pHead, FX_DWORD nMax, FX_DWORD cbElement)
-{
-    CFX_Plex* p = (CFX_Plex*)FX_Alloc(uint8_t, sizeof(CFX_Plex) + nMax * cbElement);
-    p->pNext = pHead;
-    pHead = p;
-    return p;
+CFX_Plex* CFX_Plex::Create(CFX_Plex*& pHead,
+                           FX_DWORD nMax,
+                           FX_DWORD cbElement) {
+  CFX_Plex* p =
+      (CFX_Plex*)FX_Alloc(uint8_t, sizeof(CFX_Plex) + nMax * cbElement);
+  p->pNext = pHead;
+  pHead = p;
+  return p;
 }
-void CFX_Plex::FreeDataChain()
-{
-    CFX_Plex* p = this;
-    while (p != NULL) {
-        uint8_t* bytes = (uint8_t*)p;
-        CFX_Plex* pNext = p->pNext;
-        FX_Free(bytes);
-        p = pNext;
-    }
+void CFX_Plex::FreeDataChain() {
+  CFX_Plex* p = this;
+  while (p != NULL) {
+    uint8_t* bytes = (uint8_t*)p;
+    CFX_Plex* pNext = p->pNext;
+    FX_Free(bytes);
+    p = pNext;
+  }
 }