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

third_party/WebKit/Source/platform/v8_inspector/V8StringUtil.cpp

Index: third_party/WebKit/Source/platform/v8_inspector/V8StringUtil.cpp
diff --git a/third_party/WebKit/Source/platform/v8_inspector/V8StringUtil.cpp b/third_party/WebKit/Source/platform/v8_inspector/V8StringUtil.cpp
index d078da6a0e3b75919570a9340a003ad1be7b054f..6c0b2bf0f22ad28bbf1a09ec5d856ef2a3ae9b62 100644
--- a/third_party/WebKit/Source/platform/v8_inspector/V8StringUtil.cpp
+++ b/third_party/WebKit/Source/platform/v8_inspector/V8StringUtil.cpp
@@ -4,6 +4,7 @@
 
 #include "platform/v8_inspector/V8StringUtil.h"
 
+#include "platform/inspector_protocol/InspectorProtocol.h"
 #include "platform/v8_inspector/V8InspectorImpl.h"
 #include "platform/v8_inspector/V8InspectorSessionImpl.h"
 #include "platform/v8_inspector/V8Regex.h"
@@ -167,6 +168,15 @@ v8::Local<v8::String> toV8StringInternalized(v8::Isolate* isolate, const char* s
     return v8::String::NewFromUtf8(isolate, str, v8::NewStringType::kInternalized).ToLocalChecked();
 }
 
+v8::Local<v8::String> toV8String(v8::Isolate* isolate, const StringView& string)
+{
+    if (!string.length())
+        return v8::String::Empty(isolate);
+    if (string.is8Bit())
+        return v8::String::NewFromOneByte(isolate, reinterpret_cast<const uint8_t*>(string.characters8()), v8::NewStringType::kNormal, string.length()).ToLocalChecked();
+    return v8::String::NewFromTwoByte(isolate, reinterpret_cast<const uint16_t*>(string.characters16()), v8::NewStringType::kNormal, string.length()).ToLocalChecked();
+}
+
 String16 toProtocolString(v8::Local<v8::String> value)
 {
     if (value.IsEmpty() || value->IsNull() || value->IsUndefined())
@@ -183,6 +193,49 @@ String16 toProtocolStringWithTypeCheck(v8::Local<v8::Value> value)
     return toProtocolString(value.As<v8::String>());
 }
 
+String16 toString16(const StringView& string)
+{
+    if (!string.length())
+        return String16();
+    if (string.is8Bit())
+        return String16(reinterpret_cast<const char*>(string.characters8()), string.length());
+    return String16(reinterpret_cast<const UChar*>(string.characters16()), string.length());
+}
+
+StringView toStringView(const String16& string)
+{
+    if (string.isEmpty())
+        return StringView();
+    return StringView(reinterpret_cast<const uint16_t*>(string.characters16()), string.length());
+}
+
+bool stringViewStartsWith(const StringView& string, const char* prefix)
+{
+    if (!string.length())
+        return !(*prefix);
+    if (string.is8Bit()) {
+        for (size_t i = 0, j = 0; prefix[j] && i < string.length(); ++i, ++j) {
+            if (string.characters8()[i] != prefix[j])
+                return false;
+        }
+    } else {
+        for (size_t i = 0, j = 0; prefix[j] && i < string.length(); ++i, ++j) {
+            if (string.characters16()[i] != prefix[j])
+                return false;
+        }
+    }
+    return true;
+}
+
+std::unique_ptr<protocol::Value> parseJSON(const StringView& string)
+{
+    if (!string.length())
+        return nullptr;
+    if (string.is8Bit())
+        return blink::protocol::parseJSON(string.characters8(), string.length());
+    return blink::protocol::parseJSON(string.characters16(), string.length());
+}
+
 std::vector<std::unique_ptr<protocol::Debugger::SearchMatch>> searchInTextByLinesImpl(V8InspectorSession* session, const String16& text, const String16& query, const bool caseSensitive, const bool isRegex)
 {
     std::unique_ptr<V8Regex> regex = createSearchRegex(static_cast<V8InspectorSessionImpl*>(session)->inspector(), query, caseSensitive, isRegex);