Assign unique partition ID to gaia webview

chrome/browser/ui/webui/inline_login_ui.cc

Index: chrome/browser/ui/webui/inline_login_ui.cc
diff --git a/chrome/browser/ui/webui/inline_login_ui.cc b/chrome/browser/ui/webui/inline_login_ui.cc
index 5198017ca61f28c6c4aff3b4d8e28c65be725ebc..4049a986fc693ae8a9995f2156ff0dcf92266926 100644
--- a/chrome/browser/ui/webui/inline_login_ui.cc
+++ b/chrome/browser/ui/webui/inline_login_ui.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ui/webui/inline_login_ui.h"
 
+#include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
@@ -92,6 +93,9 @@ class InlineLoginUIOAuth2Delegate
 };
 #endif // OS_CHROMEOS
 
+// Global SequenceNumber used for generating unique webview partition IDs.
+static base::StaticAtomicSequenceNumber next_partition_id;
+
 class InlineLoginUIHandler : public content::WebUIMessageHandler {
  public:
   explicit InlineLoginUIHandler(Profile* profile)
@@ -165,6 +169,10 @@ class InlineLoginUIHandler : public content::WebUIMessageHandler {
       net::GetValueForKeyInQuery(current_url, "Email", &email);
       if (!email.empty())
         params.SetString("email", email);
+
+      partition_id_ =
+          "gaia-webview-" + base::IntToString(next_partition_id.GetNext());
+      params.SetString("partitionId", partition_id_);
     }
 #endif
 
@@ -200,7 +208,8 @@ class InlineLoginUIHandler : public content::WebUIMessageHandler {
     content::StoragePartition* partition =
         content::BrowserContext::GetStoragePartitionForSite(
             web_contents->GetBrowserContext(),
-            GURL("chrome-guest://mfffpogegjflfpflabcdkioaeobkgjik/?"));
+            GURL("chrome-guest://mfffpogegjflfpflabcdkioaeobkgjik/?" +
+                 partition_id_));
 
     scoped_refptr<SigninManagerCookieHelper> cookie_helper(
         new SigninManagerCookieHelper(partition->GetURLRequestContext()));
@@ -309,6 +318,8 @@ class InlineLoginUIHandler : public content::WebUIMessageHandler {
   Profile* profile_;
   base::WeakPtrFactory<InlineLoginUIHandler> weak_factory_;
   bool choose_what_to_sync_;
+  // Partition id for the gaia webview;
+  std::string partition_id_;
 
 #if defined(OS_CHROMEOS)
   scoped_ptr<chromeos::OAuth2TokenFetcher> oauth2_token_fetcher_;