Optimization: reduce the copying of string data between C++ and javascript in proxy_resolver_v8.cc.

This is done by sharing the string storage using ExternalStringResource. 

An accompanying change was to pass around the PAC script data as a UTF16 string16 rather than a UTF8 std::string -- this required changing plumbing in the other files. 

This optimization will be important when creating multiple ProxyResolverV8's so they don't end up duplicating the script text. 

BUG=11079
Review URL: http://codereview.chromium.org/2817043

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@51434 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 2 deletions

diff --git a/net/proxy/init_proxy_resolver.cc b/net/proxy/init_proxy_resolver.cc
index ea1e475..3817468 100644
--- a/net/proxy/init_proxy_resolver.cc
+++ b/net/proxy/init_proxy_resolver.cc
@@ -134,7 +134,7 @@ int InitProxyResolver::DoFetchPacScript() {
     return ERR_UNEXPECTED;
   }
 
-  return proxy_script_fetcher_->Fetch(pac_url, &pac_bytes_, &io_callback_);
+  return proxy_script_fetcher_->Fetch(pac_url, &pac_script_, &io_callback_);
 }
 
 int InitProxyResolver::DoFetchPacScriptComplete(int result) {
@@ -161,7 +161,7 @@ int InitProxyResolver::DoSetPacScript() {
   next_state_ = STATE_SET_PAC_SCRIPT_COMPLETE;
 
   return resolver_->expects_pac_bytes() ?
-      resolver_->SetPacScriptByData(pac_bytes_, &io_callback_) :
+      resolver_->SetPacScriptByData(pac_script_, &io_callback_) :
       resolver_->SetPacScriptByUrl(pac_url, &io_callback_);
 }