Replace Error(GL_NO_ERROR) with NoError().

In order to make the errors be consistent throughout ANGLE.

BUG=angleproject:1686

Change-Id: I0a2d86091d640aedeac94beae345c1fb6971b00d
Reviewed-on: https://chromium-review.googlesource.com/424835
Commit-Queue: Yunchao He <yunchao.he@intel.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
diff --git a/src/libANGLE/renderer/gl/VertexArrayGL.cpp b/src/libANGLE/renderer/gl/VertexArrayGL.cpp
index 02373fe..1fb25da 100644
--- a/src/libANGLE/renderer/gl/VertexArrayGL.cpp
+++ b/src/libANGLE/renderer/gl/VertexArrayGL.cpp
@@ -152,7 +152,7 @@
         }
     }
 
-    return Error(GL_NO_ERROR);
+    return NoError();
 }
 
 gl::Error VertexArrayGL::syncIndexData(GLsizei count,
@@ -232,7 +232,7 @@
         *outIndices = nullptr;
     }
 
-    return Error(GL_NO_ERROR);
+    return NoError();
 }
 
 void VertexArrayGL::computeStreamingAttributeSizes(const gl::AttributesMask &activeAttributesMask,
@@ -275,7 +275,7 @@
 
     if (streamingDataSize == 0)
     {
-        return gl::Error(GL_NO_ERROR);
+        return gl::NoError();
     }
 
     if (mStreamingArrayBuffer == 0)
@@ -376,7 +376,7 @@
         return Error(GL_OUT_OF_MEMORY, "Failed to unmap the client data streaming buffer.");
     }
 
-    return Error(GL_NO_ERROR);
+    return NoError();
 }
 
 GLuint VertexArrayGL::getVertexArrayID() const