Cache the numberOfProcessors value on posix and expose it to blink

We need to cache the value, so we can request it from blink after
the sandbox was already turned on.

BUG=321060
R=jam@chromium.org,mark@chromium.org,jamesr@chromium.org

Review URL: https://codereview.chromium.org/67373006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236224 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 5 insertions, 0 deletions

diff --git a/webkit/child/webkitplatformsupport_impl.cc b/webkit/child/webkitplatformsupport_impl.cc
index 92d7ad6..48c8854 100644
--- a/webkit/child/webkitplatformsupport_impl.cc
+++ b/webkit/child/webkitplatformsupport_impl.cc
@@ -871,6 +871,10 @@ size_t WebKitPlatformSupportImpl::physicalMemoryMB() {
   return static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemoryMB());
 }
 
+size_t WebKitPlatformSupportImpl::numberOfProcessors() {
+  return static_cast<size_t>(base::SysInfo::NumberOfProcessors());
+}
+
 void WebKitPlatformSupportImpl::startHeapProfiling(
   const blink::WebString& prefix) {
   // FIXME(morrita): Make this built on windows.
diff --git a/webkit/child/webkitplatformsupport_impl.h b/webkit/child/webkitplatformsupport_impl.h
index 54e742e..175bfe3 100644
--- a/webkit/child/webkitplatformsupport_impl.h
+++ b/webkit/child/webkitplatformsupport_impl.h
@@ -50,6 +50,7 @@ class WEBKIT_CHILD_EXPORT WebKitPlatformSupportImpl :
   virtual size_t memoryUsageMB();
   virtual size_t actualMemoryUsageMB();
   virtual size_t physicalMemoryMB();
+  virtual size_t numberOfProcessors();
 
   virtual void startHeapProfiling(const blink::WebString& prefix);
   virtual void stopHeapProfiling() OVERRIDE;