Rename CPDF_{Byte,Wide}String::AsSpan() to span()

Makes these method names consistent between strings and string views,
so that templates may more easily be applied to both.

-- CPDF_ByteString::AsRawSpan() renamed to raw_span().

Change-Id: If957ecb99987bf70885e1cd62b837e216a60acaa
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/57950
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/cpdfsdk_interactiveform.cpp b/fpdfsdk/cpdfsdk_interactiveform.cpp
index 2fee643..67fa3e3 100644
--- a/fpdfsdk/cpdfsdk_interactiveform.cpp
+++ b/fpdfsdk/cpdfsdk_interactiveform.cpp
@@ -101,7 +101,7 @@
     name = pField->GetUnicodeTextFor("T");
     ByteString name_b = name.ToDefANSI();
     ByteString csBValue = pField->GetStringFor("V");
-    WideString csWValue = PDF_DecodeText(csBValue.AsRawSpan());
+    WideString csWValue = PDF_DecodeText(csBValue.raw_span());
     ByteString csValue_b = csWValue.ToDefANSI();
     fdfEncodedData << name_b << "=" << csValue_b;
     if (i != pFields->size() - 1)
diff --git a/fpdfsdk/fpdf_annot.cpp b/fpdfsdk/fpdf_annot.cpp
index 3bca040..1274b4a 100644
--- a/fpdfsdk/fpdf_annot.cpp
+++ b/fpdfsdk/fpdf_annot.cpp
@@ -774,7 +774,7 @@
 
     ByteString newValue = PDF_EncodeText(WideStringFromFPDFWideString(value));
     auto* pNewApStream = pApDict->SetNewFor<CPDF_Stream>(modeKey);
-    pNewApStream->SetData(newValue.AsRawSpan());
+    pNewApStream->SetData(newValue.raw_span());
   } else {
     if (pApDict) {
       if (appearanceMode == FPDF_ANNOT_APPEARANCEMODE_NORMAL)
diff --git a/fpdfsdk/fpdf_attachment.cpp b/fpdfsdk/fpdf_attachment.cpp
index 937b504..8617a98 100644
--- a/fpdfsdk/fpdf_attachment.cpp
+++ b/fpdfsdk/fpdf_attachment.cpp
@@ -32,7 +32,7 @@
 ByteString CFXByteStringHexDecode(const ByteString& bsHex) {
   std::unique_ptr<uint8_t, FxFreeDeleter> result;
   uint32_t size = 0;
-  HexDecode(bsHex.AsRawSpan(), &result, &size);
+  HexDecode(bsHex.raw_span(), &result, &size);
   return ByteString(result.get(), size);
 }
 
diff --git a/fpdfsdk/fpdf_flatten.cpp b/fpdfsdk/fpdf_flatten.cpp
index 470869b..d1a6db7 100644
--- a/fpdfsdk/fpdf_flatten.cpp
+++ b/fpdfsdk/fpdf_flatten.cpp
@@ -178,7 +178,7 @@
                                        const ByteString& contents) {
   CPDF_Stream* pNewContents = pDocument->NewIndirect<CPDF_Stream>(
       nullptr, 0, pDocument->New<CPDF_Dictionary>());
-  pNewContents->SetData(contents.AsRawSpan());
+  pNewContents->SetData(contents.raw_span());
   return pNewContents;
 }
 
@@ -213,7 +213,7 @@
       sStream += ByteString(pAcc->GetSpan());
       sStream += "\nQ";
     }
-    pContentsStream->SetDataAndRemoveFilter(sStream.AsRawSpan());
+    pContentsStream->SetDataAndRemoveFilter(sStream.raw_span());
     pContentsArray = pDocument->NewIndirect<CPDF_Array>();
     pContentsArray->AddNew<CPDF_Reference>(pDocument,
                                            pContentsStream->GetObjNum());
@@ -413,7 +413,7 @@
     ByteString str(buf);
     sStream += ByteString::Format("q %s cm /%s Do Q\n", str.c_str(),
                                   sFormName.c_str());
-    pNewXObject->SetDataAndRemoveFilter(sStream.AsRawSpan());
+    pNewXObject->SetDataAndRemoveFilter(sStream.raw_span());
   }
   pPageDict->RemoveFor("Annots");
   return FLATTEN_SUCCESS;
diff --git a/fpdfsdk/fpdf_ppo.cpp b/fpdfsdk/fpdf_ppo.cpp
index 113d501..e8261a2 100644
--- a/fpdfsdk/fpdf_ppo.cpp
+++ b/fpdfsdk/fpdf_ppo.cpp
@@ -696,7 +696,7 @@
       pAcc->LoadAllDataFiltered();
       bsSrcContentStream = ByteString(pAcc->GetData(), pAcc->GetSize());
     }
-    pNewXObject->SetDataAndRemoveFilter(bsSrcContentStream.AsRawSpan());
+    pNewXObject->SetDataAndRemoveFilter(bsSrcContentStream.raw_span());
   }
 
   // TODO(xlou): A better name schema to avoid possible object name collision.
@@ -727,7 +727,7 @@
   auto pDict = dest()->New<CPDF_Dictionary>();
   CPDF_Stream* pStream =
       dest()->NewIndirect<CPDF_Stream>(nullptr, 0, std::move(pDict));
-  pStream->SetData(bsContent.AsRawSpan());
+  pStream->SetData(bsContent.raw_span());
   pDestPageDict->SetNewFor<CPDF_Reference>(pdfium::page_object::kContents,
                                            dest(), pStream->GetObjNum());
 }
diff --git a/fpdfsdk/pwl/cpwl_appstream.cpp b/fpdfsdk/pwl/cpwl_appstream.cpp
index c7f4ff7..261b274 100644
--- a/fpdfsdk/pwl/cpwl_appstream.cpp
+++ b/fpdfsdk/pwl/cpwl_appstream.cpp
@@ -1937,7 +1937,7 @@
   }
   pStreamDict->SetMatrixFor("Matrix", widget_->GetMatrix());
   pStreamDict->SetRectFor("BBox", widget_->GetRotatedRect());
-  pStream->SetDataAndRemoveFilter(sContents.AsRawSpan());
+  pStream->SetDataAndRemoveFilter(sContents.raw_span());
 }
 
 void CPWL_AppStream::Remove(const ByteString& sAPType) {