DevTools: generate string16-based handlers for v8_inspector.

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

Index: third_party/WebKit/Source/platform/inspector_protocol/Dispatcher_h.template
diff --git a/third_party/WebKit/Source/platform/inspector_protocol/Dispatcher_h.template b/third_party/WebKit/Source/platform/inspector_protocol/Dispatcher_h.template
index 3a9f3f07ef8e050a69d974bd8fd7baaba65faa88..2cde7f119801498f1f0de0391381a17d6c546f42 100644
--- a/third_party/WebKit/Source/platform/inspector_protocol/Dispatcher_h.template
+++ b/third_party/WebKit/Source/platform/inspector_protocol/Dispatcher_h.template
@@ -14,7 +14,6 @@ namespace protocol {
 
 class FrontendChannel;
 class DispatcherImplWeakPtr;
-using ErrorString = String;
 
 class PLATFORM_EXPORT Dispatcher {
 public:
@@ -102,15 +101,13 @@ public:
         LastEntry,
     };
 
-    void reportProtocolError(int sessionId, int callId, CommonErrorCode, const String& errorMessage) const;
-    virtual void reportProtocolError(int sessionId, int callId, CommonErrorCode, const String& errorMessage, ErrorSupport*) const = 0;
-    virtual void dispatch(int sessionId, const String& message) = 0;
-    static bool getCommandName(const String& message, String* result);
+    void reportProtocolError(int sessionId, int callId, CommonErrorCode, const String16& errorMessage) const;
+    virtual void reportProtocolError(int sessionId, int callId, CommonErrorCode, const String16& errorMessage, ErrorSupport*) const = 0;
+    virtual void dispatch(int sessionId, const String16& message) = 0;
+    static bool getCommandName(const String16& message, String16* result);
 };
 
 } // namespace protocol
 } // namespace blink
 
-using blink::protocol::ErrorString;
-
 #endif // !defined({{class_name}}_h)