[DevTools] Migrate v8_inspector/public from String16 to String{View,Buffer}.

third_party/WebKit/Source/platform/inspector_protocol/String16_h.template

Index: third_party/WebKit/Source/platform/inspector_protocol/String16_h.template
diff --git a/third_party/WebKit/Source/platform/inspector_protocol/String16_h.template b/third_party/WebKit/Source/platform/inspector_protocol/String16_h.template
index e6f8f0c78465ae686ac3e2bf089f633eb56862ee..67086a3a289f6355aa94b42ae991ba591606f629 100644
--- a/third_party/WebKit/Source/platform/inspector_protocol/String16_h.template
+++ b/third_party/WebKit/Source/platform/inspector_protocol/String16_h.template
@@ -80,6 +80,12 @@ public:
         return internal::strToDouble(buffer.data(), ok);
     }
 
+    static double charactersToDouble(const uint8_t* characters, size_t length, bool* ok = nullptr)
+    {
+        std::string buffer(reinterpret_cast<const char*>(characters), length);
+        return internal::strToDouble(buffer.c_str(), ok);
+    }
+
     static int charactersToInteger(const C* characters, size_t length, bool* ok = nullptr)
     {
         std::vector<char> buffer;
@@ -136,17 +142,6 @@ public:
             return T(static_cast<const T&>(*this));
         return T(characters + start, end + 1 - start);
     }
-
-    bool startsWith(const char* prefix) const
-    {
-        const C* characters = static_cast<const T&>(*this).characters16();
-        size_t length = static_cast<const T&>(*this).length();
-        for (size_t i = 0, j = 0; prefix[j] && i < length; ++i, ++j) {
-            if (characters[i] != prefix[j])
-                return false;
-        }
-        return true;
-    }
 };
 
 } // namespace protocol