Use STL style naming for some WTF::AtomicString::find() overloads.

Like the WTF::String change, this leaves the the Find() overload that
takes a StringView, start offset, and a case sensitivity option for a
followup CL.

Bug: 709815
Change-Id: I8f98fe0b41eb99a525ca608690c8ae0bdcebf6a6
Reviewed-on: https://chromium-review.googlesource.com/489368Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#467872}

third_party/WebKit/Source/core/dom/custom/CustomElement.h

@@ -37,7 +37,7 @@ class CORE_EXPORT CustomElement {
 
   static bool IsValidName(const AtomicString& name) {
     // This quickly rejects all common built-in element names.
-    if (name.Find('-', 1) == kNotFound)
+    if (name.find('-', 1) == kNotFound)
       return false;
 
     if (!IsASCIILower(name[0]))

third_party/WebKit/Source/core/dom/custom/V0CustomElement.cpp

@@ -64,7 +64,7 @@ void V0CustomElement::AddEmbedderCustomElementName(const AtomicString& name) {
 }
 
 static inline bool IsValidNCName(const AtomicString& name) {
-  if (kNotFound != name.Find(':'))
+  if (kNotFound != name.find(':'))
     return false;
 
   if (!name.GetString().Is8Bit()) {
@@ -86,7 +86,7 @@ bool V0CustomElement::IsValidName(const AtomicString& name,
       kNotFound != EmbedderCustomElementNames().Find(name))
     return Document::IsValidName(name);
 
-  if ((valid_names & kStandardNames) && kNotFound != name.Find('-')) {
+  if ((valid_names & kStandardNames) && kNotFound != name.find('-')) {
     DEFINE_STATIC_LOCAL(Vector<AtomicString>, reserved_names, ());
     if (reserved_names.IsEmpty()) {
       // FIXME(crbug.com/426605): We should be able to remove this.

third_party/WebKit/Source/platform/wtf/text/AtomicString.h

@@ -98,14 +98,14 @@ class WTF_EXPORT AtomicString {
   UChar operator[](unsigned i) const { return string_[i]; }
 
   // Find characters.
-  size_t Find(UChar c, unsigned start = 0) const {
+  size_t find(UChar c, unsigned start = 0) const {
     return string_.find(c, start);
   }
-  size_t Find(LChar c, unsigned start = 0) const {
+  size_t find(LChar c, unsigned start = 0) const {
     return string_.find(c, start);
   }
-  size_t Find(char c, unsigned start = 0) const {
-    return Find(static_cast<LChar>(c), start);
+  size_t find(char c, unsigned start = 0) const {
+    return find(static_cast<LChar>(c), start);
   }
   size_t Find(CharacterMatchFunctionPtr match_function,
               unsigned start = 0) const {
@@ -132,7 +132,7 @@ class WTF_EXPORT AtomicString {
     return string_.FindIgnoringASCIICase(value, start);
   }
 
-  bool Contains(char c) const { return Find(c) != kNotFound; }
+  bool Contains(char c) const { return find(c) != kNotFound; }
   bool Contains(
       const StringView& value,
       TextCaseSensitivity case_sensitivity = kTextCaseSensitive) const {