Use WebIDBKeyPath type in WebKit API, implement IndexedDBKeyPath type.

content/browser/in_process_webkit/indexed_db_key_utility_client.cc

Index: content/browser/in_process_webkit/indexed_db_key_utility_client.cc
diff --git a/content/browser/in_process_webkit/indexed_db_key_utility_client.cc b/content/browser/in_process_webkit/indexed_db_key_utility_client.cc
index 331febfe791cd2f085713bab05f64d02a0a2f022..a8f55377f9180b843a2bc372cd4166b58f3bc76f 100644
--- a/content/browser/in_process_webkit/indexed_db_key_utility_client.cc
+++ b/content/browser/in_process_webkit/indexed_db_key_utility_client.cc
@@ -9,6 +9,7 @@
 #include "base/synchronization/waitable_event.h"
 #include "content/browser/utility_process_host_impl.h"
 #include "content/common/indexed_db/indexed_db_key.h"
+#include "content/common/indexed_db/indexed_db_key_path.h"
 #include "content/common/indexed_db/indexed_db_messages.h"
 #include "content/common/utility_messages.h"
 #include "content/public/browser/utility_process_host_client.h"
@@ -36,7 +37,7 @@ class KeyUtilityClientImpl
   // Synchronously obtain the |keys| from |values| for the given |key_path|.
   void CreateIDBKeysFromSerializedValuesAndKeyPath(
       const std::vector<content::SerializedScriptValue>& values,
-      const string16& key_path,
+      const IndexedDBKeyPath& key_path,
       std::vector<IndexedDBKey>* keys);
 
   // Synchronously inject |key| into |value| using the given |key_path|,
@@ -44,7 +45,7 @@ class KeyUtilityClientImpl
   content::SerializedScriptValue InjectIDBKeyIntoSerializedValue(
       const IndexedDBKey& key,
       const content::SerializedScriptValue& value,
-      const string16& key_path);
+      const IndexedDBKeyPath& key_path);
 
  private:
   class Client : public UtilityProcessHostClient {
@@ -75,11 +76,11 @@ class KeyUtilityClientImpl
   void EndUtilityProcessInternal();
   void CallStartIDBKeyFromValueAndKeyPathFromIOThread(
       const std::vector<content::SerializedScriptValue>& values,
-      const string16& key_path);
+      const IndexedDBKeyPath& key_path);
   void CallStartInjectIDBKeyFromIOThread(
       const IndexedDBKey& key,
       const content::SerializedScriptValue& value,
-      const string16& key_path);
+      const IndexedDBKeyPath& key_path);
 
   void SetKeys(const std::vector<IndexedDBKey>& keys);
   void FinishCreatingKeys();
@@ -136,7 +137,7 @@ void IndexedDBKeyUtilityClient::Shutdown() {
 //  static
 void IndexedDBKeyUtilityClient::CreateIDBKeysFromSerializedValuesAndKeyPath(
       const std::vector<content::SerializedScriptValue>& values,
-      const string16& key_path,
+      const IndexedDBKeyPath& key_path,
       std::vector<IndexedDBKey>* keys) {
   IndexedDBKeyUtilityClient* instance = client_instance.Pointer();
 
@@ -158,7 +159,7 @@ void IndexedDBKeyUtilityClient::CreateIDBKeysFromSerializedValuesAndKeyPath(
 content::SerializedScriptValue
 IndexedDBKeyUtilityClient::InjectIDBKeyIntoSerializedValue(
     const IndexedDBKey& key, const content::SerializedScriptValue& value,
-    const string16& key_path) {
+    const IndexedDBKeyPath& key_path) {
   IndexedDBKeyUtilityClient* instance = client_instance.Pointer();
 
   if (instance->is_shutdown_)
@@ -210,7 +211,7 @@ void KeyUtilityClientImpl::StartUtilityProcess() {
 
 void KeyUtilityClientImpl::CreateIDBKeysFromSerializedValuesAndKeyPath(
     const std::vector<content::SerializedScriptValue>& values,
-    const string16& key_path,
+    const IndexedDBKeyPath& key_path,
     std::vector<IndexedDBKey>* keys) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::WEBKIT_DEPRECATED));
   if (state_ == STATE_SHUTDOWN) {
@@ -232,7 +233,7 @@ content::SerializedScriptValue
     KeyUtilityClientImpl::InjectIDBKeyIntoSerializedValue(
         const IndexedDBKey& key,
         const content::SerializedScriptValue& value,
-        const string16& key_path) {
+        const IndexedDBKeyPath& key_path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::WEBKIT_DEPRECATED));
   if (state_ == STATE_SHUTDOWN)
     return content::SerializedScriptValue();
@@ -304,7 +305,7 @@ void KeyUtilityClientImpl::EndUtilityProcessInternal() {
 
 void KeyUtilityClientImpl::CallStartIDBKeyFromValueAndKeyPathFromIOThread(
     const std::vector<content::SerializedScriptValue>& values,
-    const string16& key_path) {
+    const IndexedDBKeyPath& key_path) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
@@ -324,7 +325,7 @@ void KeyUtilityClientImpl::CallStartIDBKeyFromValueAndKeyPathFromIOThread(
 void KeyUtilityClientImpl::CallStartInjectIDBKeyFromIOThread(
     const IndexedDBKey& key,
     const content::SerializedScriptValue& value,
-    const string16& key_path) {
+    const IndexedDBKeyPath& key_path) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,