Move CFX_StringPoolTemplate to StringPoolTemplate

This CL moves CFX_StringPoolTemplate to StringPoolTemplate and places in
the fxcrt namespace.

Bug: pdfium:898
Change-Id: I41c8f23d6ad814d65cd154092143efaa630a96d1
Reviewed-on: https://pdfium-review.googlesource.com/14619
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index a823fe4..7b9664c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -821,7 +821,6 @@
     "core/fxcrt/cfx_fixedbufgrow.h",
     "core/fxcrt/cfx_memorystream.cpp",
     "core/fxcrt/cfx_memorystream.h",
-    "core/fxcrt/cfx_string_pool_template.h",
     "core/fxcrt/cfx_unowned_ptr.h",
     "core/fxcrt/cfx_utf8decoder.cpp",
     "core/fxcrt/cfx_utf8decoder.h",
@@ -857,6 +856,7 @@
     "core/fxcrt/retain_ptr.h",
     "core/fxcrt/shared_copy_on_write.h",
     "core/fxcrt/string_data_template.h",
+    "core/fxcrt/string_pool_template.h",
     "core/fxcrt/string_view_template.h",
     "core/fxcrt/widestring.cpp",
     "core/fxcrt/widestring.h",
@@ -1920,7 +1920,6 @@
     "core/fxcodec/jbig2/JBig2_BitStream_unittest.cpp",
     "core/fxcodec/jbig2/JBig2_Image_unittest.cpp",
     "core/fxcrt/bytestring_unittest.cpp",
-    "core/fxcrt/cfx_string_pool_template_unittest.cpp",
     "core/fxcrt/cfx_unowned_ptr_unittest.cpp",
     "core/fxcrt/cfx_weak_ptr_unittest.cpp",
     "core/fxcrt/fx_bidi_unittest.cpp",
@@ -1934,6 +1933,7 @@
     "core/fxcrt/observable_unittest.cpp",
     "core/fxcrt/retain_ptr_unittest.cpp",
     "core/fxcrt/shared_copy_on_write_unittest.cpp",
+    "core/fxcrt/string_pool_template_unittest.cpp",
     "core/fxcrt/widestring_unittest.cpp",
     "core/fxge/dib/cstretchengine_unittest.cpp",
     "fpdfsdk/fpdfdoc_unittest.cpp",