Fix build with jpeg-9. Bug #646456

--- a/src/3rdparty/chromium/third_party/pdfium/core/fxcodec/codec/fx_codec_jpeg.cpp	2018-01-15 12:39:43.000000000 +0100
+++ b/src/3rdparty/chromium/third_party/pdfium/core/fxcodec/codec/fx_codec_jpeg.cpp	2018-02-06 20:55:37.455912163 +0100
@@ -57,12 +57,12 @@
 };
 extern "C" {
 static boolean _src_fill_buffer(j_decompress_ptr cinfo) {
-  return 0;
+  return FALSE;
 }
 };
 extern "C" {
 static boolean _src_resync(j_decompress_ptr cinfo, int desired) {
-  return 0;
+  return FALSE;
 }
 };
 extern "C" {
@@ -126,7 +126,7 @@
     jpeg_destroy_decompress(&cinfo);
     return false;
   }
-  int ret = jpeg_read_header(&cinfo, true);
+  int ret = jpeg_read_header(&cinfo, TRUE);
   if (ret != JPEG_HEADER_OK) {
     jpeg_destroy_decompress(&cinfo);
     return false;
@@ -210,7 +210,7 @@
   }
   cinfo.image_width = m_OrigWidth;
   cinfo.image_height = m_OrigHeight;
-  int ret = jpeg_read_header(&cinfo, true);
+  int ret = jpeg_read_header(&cinfo, TRUE);
   if (ret != JPEG_HEADER_OK)
     return false;
 
@@ -433,7 +433,7 @@
   if (setjmp(ctx->m_JumpMark) == -1)
     return 1;
 
-  int ret = jpeg_read_header(&ctx->m_Info, true);
+  int ret = jpeg_read_header(&ctx->m_Info, TRUE);
   if (ret == JPEG_SUSPENDED)
     return 2;
   if (ret != JPEG_HEADER_OK)