sql: fix GCC build after introducing enum class sql::ColumnType

GCC complains about symbol clash between enum class sql::ColumnType
and method Statement::ColumnType. To avoid this, rename the method
to Statement::GetColumnType.

BUG=chromium:819294

Change-Id: Ic49ba2233ba062be958478c6f659e6b72276457a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1553320
Commit-Queue: José Dapena Paz <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Reviewed-by: Victor Costan <[email protected]>
Reviewed-by: Ben Wells <[email protected]>
Cr-Commit-Position: refs/heads/master@{#648859}
diff --git a/sql/statement.h b/sql/statement.h
index 0f9202d4..54e87e37 100644
--- a/sql/statement.h
+++ b/sql/statement.h
@@ -124,7 +124,7 @@
   // "type conversion." This means requesting the value of a column of a type
   // where that type is not the native type. For safety, call ColumnType only
   // on a column before getting the value out in any way.
-  ColumnType ColumnType(int col) const;
+  ColumnType GetColumnType(int col) const;
 
   // These all take a 0-based argument index.
   bool ColumnBool(int col) const;