Change how the quota system computes the total poolsize for temporary storage

ash/shell/content/client/shell_content_browser_client.cc

Index: ash/shell/content/client/shell_content_browser_client.cc
diff --git a/ash/shell/content/client/shell_content_browser_client.cc b/ash/shell/content/client/shell_content_browser_client.cc
index 60da70666966b9330102da77e219b8249a79aaf4..0f5dc4a0993f66c0bb15222792f97d42d78be381 100644
--- a/ash/shell/content/client/shell_content_browser_client.cc
+++ b/ash/shell/content/client/shell_content_browser_client.cc
@@ -8,6 +8,9 @@
 
 #include "ash/shell/content/client/shell_browser_main_parts.h"
 #include "base/command_line.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/storage_partition.h"
+#include "storage/browser/quota/quota_settings.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 namespace ash {
@@ -24,5 +27,16 @@ content::BrowserMainParts* ShellContentBrowserClient::CreateBrowserMainParts(
   return shell_browser_main_parts_;
 }
 
+void ShellContentBrowserClient::GetQuotaSettings(
+    content::BrowserContext* context,
+    content::StoragePartition* partition,
+    const storage::OptionalQuotaSettingsCallback& callback) {
+  content::BrowserThread::PostTaskAndReplyWithResult(
+      content::BrowserThread::FILE, FROM_HERE,
+      base::Bind(&storage::CalculateNominalDynamicSettings,
+                 partition->GetPath(), context->IsOffTheRecord()),
+      callback);
+}
+
 }  // namespace examples
 }  // namespace views