fxcrt convergence - master side

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1410933002 .
diff --git a/core/src/fxge/agg/src/fx_agg_driver.cpp b/core/src/fxge/agg/src/fx_agg_driver.cpp
index fd3ea25..d9783d1 100644
--- a/core/src/fxge/agg/src/fx_agg_driver.cpp
+++ b/core/src/fxge/agg/src/fx_agg_driver.cpp
@@ -318,7 +318,7 @@
     const CFX_AffineMatrix* pObject2Device,
     int fill_mode) {
   m_FillFlags = fill_mode;
-  if (m_pClipRgn == NULL) {
+  if (!m_pClipRgn) {
     m_pClipRgn = new CFX_ClipRgn(GetDeviceCaps(FXDC_PIXEL_WIDTH),
                                  GetDeviceCaps(FXDC_PIXEL_HEIGHT));
   }
@@ -350,7 +350,7 @@
     const CFX_PathData* pPathData,
     const CFX_AffineMatrix* pObject2Device,
     const CFX_GraphStateData* pGraphState) {
-  if (m_pClipRgn == NULL) {
+  if (!m_pClipRgn) {
     m_pClipRgn = new CFX_ClipRgn(GetDeviceCaps(FXDC_PIXEL_WIDTH),
                                  GetDeviceCaps(FXDC_PIXEL_HEIGHT));
   }