IndexedDB: Switch key/value handling from vector<char> to std::string

content/common/indexed_db/indexed_db_messages.h

Index: content/common/indexed_db/indexed_db_messages.h
diff --git a/content/common/indexed_db/indexed_db_messages.h b/content/common/indexed_db/indexed_db_messages.h
index a79bb28ab8e7fd446e6d8b2ec5dd6cd641c0a094..5c56d88ebfd66fb1faa3d4730cc9c9ac60f79adf 100644
--- a/content/common/indexed_db/indexed_db_messages.h
+++ b/content/common/indexed_db/indexed_db_messages.h
@@ -127,7 +127,7 @@ IPC_STRUCT_BEGIN(IndexedDBHostMsg_DatabasePut_Params)
   // The index's id.
   IPC_STRUCT_MEMBER(int64, index_id)
   // The value to set.
-  IPC_STRUCT_MEMBER(std::vector<char>, value)
+  IPC_STRUCT_MEMBER(std::string, value)
   // The key to set it on (may not be "valid"/set in some cases).
   IPC_STRUCT_MEMBER(content::IndexedDBKey, key)
   // Whether this is an add or a put.
@@ -236,7 +236,7 @@ IPC_STRUCT_BEGIN(IndexedDBMsg_CallbacksSuccessIDBCursor_Params)
   IPC_STRUCT_MEMBER(int32, ipc_cursor_id)
   IPC_STRUCT_MEMBER(content::IndexedDBKey, key)
   IPC_STRUCT_MEMBER(content::IndexedDBKey, primary_key)
-  IPC_STRUCT_MEMBER(std::vector<char>, value)
+  IPC_STRUCT_MEMBER(std::string, value)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(IndexedDBMsg_CallbacksSuccessCursorContinue_Params)
@@ -245,7 +245,7 @@ IPC_STRUCT_BEGIN(IndexedDBMsg_CallbacksSuccessCursorContinue_Params)
   IPC_STRUCT_MEMBER(int32, ipc_cursor_id)
   IPC_STRUCT_MEMBER(content::IndexedDBKey, key)
   IPC_STRUCT_MEMBER(content::IndexedDBKey, primary_key)
-  IPC_STRUCT_MEMBER(std::vector<char>, value)
+  IPC_STRUCT_MEMBER(std::string, value)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(IndexedDBMsg_CallbacksSuccessCursorPrefetch_Params)
@@ -254,7 +254,7 @@ IPC_STRUCT_BEGIN(IndexedDBMsg_CallbacksSuccessCursorPrefetch_Params)
   IPC_STRUCT_MEMBER(int32, ipc_cursor_id)
   IPC_STRUCT_MEMBER(std::vector<content::IndexedDBKey>, keys)
   IPC_STRUCT_MEMBER(std::vector<content::IndexedDBKey>, primary_keys)
-  IPC_STRUCT_MEMBER(std::vector<std::vector<char> >, values)
+  IPC_STRUCT_MEMBER(std::vector<std::string>, values)
 IPC_STRUCT_END()
 
 // metadata payload for WebIDBMetadata
@@ -326,11 +326,11 @@ IPC_MESSAGE_CONTROL3(IndexedDBMsg_CallbacksSuccessIndexedDBKey,
 IPC_MESSAGE_CONTROL3(IndexedDBMsg_CallbacksSuccessValue,
                      int32 /* ipc_thread_id */,
                      int32 /* ipc_callbacks_id */,
-                     std::vector<char> /* value */)
+                     std::string /* value */)
 IPC_MESSAGE_CONTROL5(IndexedDBMsg_CallbacksSuccessValueWithKey,
                      int32 /* ipc_thread_id */,
                      int32 /* ipc_callbacks_id */,
-                     std::vector<char> /* value */,
+                     std::string /* value */,
                      content::IndexedDBKey /* indexed_db_key */,
                      content::IndexedDBKeyPath /* indexed_db_keypath */)
 IPC_MESSAGE_CONTROL3(IndexedDBMsg_CallbacksSuccessInteger,