C++11 declares a type safe null pointer

content/common/gpu/client/gl_helper_scaling.cc

Index: content/common/gpu/client/gl_helper_scaling.cc
diff --git a/content/common/gpu/client/gl_helper_scaling.cc b/content/common/gpu/client/gl_helper_scaling.cc
index dea58e751becfaa66462633b820b04fc02cb9891..353016d73a5952a9ccc9830b8e889db6c8321fc9 100644
--- a/content/common/gpu/client/gl_helper_scaling.cc
+++ b/content/common/gpu/client/gl_helper_scaling.cc
@@ -151,7 +151,7 @@ class ScalerImpl : public GLHelper::ScalerInterface,
                       0,
                       GL_RGBA,
                       GL_UNSIGNED_BYTE,
-                      NULL);
+                      nullptr);
     }
   }
 
@@ -283,7 +283,7 @@ void GLHelperScaling::ConvertScalerOpsToScalerStages(
     std::vector<ScalerStage>* scaler_stages) {
   while (!x_ops->empty() || !y_ops->empty()) {
     gfx::Size intermediate_size = src_subrect.size();
-    std::deque<ScaleOp>* current_queue = NULL;
+    std::deque<ScaleOp>* current_queue = nullptr;
 
     if (!y_ops->empty()) {
       current_queue = y_ops;
@@ -451,9 +451,9 @@ GLHelper::ScalerInterface* GLHelperScaling::CreateScaler(
                       swizzle,
                       &scaler_stages);
 
-  ScalerImpl* ret = NULL;
+  ScalerImpl* ret = nullptr;
   for (unsigned int i = 0; i < scaler_stages.size(); i++) {
-    ret = new ScalerImpl(gl_, this, scaler_stages[i], ret, NULL);
+    ret = new ScalerImpl(gl_, this, scaler_stages[i], ret, nullptr);
   }
   return ret;
 }
@@ -472,7 +472,7 @@ GLHelper::ScalerInterface* GLHelperScaling::CreatePlanarScaler(
                     true,
                     vertically_flip_texture,
                     swizzle);
-  return new ScalerImpl(gl_, this, stage, NULL, color_weights);
+  return new ScalerImpl(gl_, this, stage, nullptr, color_weights);
 }
 
 GLHelperScaling::ShaderInterface* GLHelperScaling::CreateYuvMrtShader(
@@ -490,7 +490,7 @@ GLHelperScaling::ShaderInterface* GLHelperScaling::CreateYuvMrtShader(
                     true,
                     vertically_flip_texture,
                     swizzle);
-  return new ScalerImpl(gl_, this, stage, NULL, NULL);
+  return new ScalerImpl(gl_, this, stage, nullptr, nullptr);
 }
 
 const GLfloat GLHelperScaling::kVertexAttributes[] = {