Rename WebCore namespace to blink in Platform

Source/platform/SharedTimer.cpp

Index: Source/platform/SharedTimer.cpp
diff --git a/Source/platform/SharedTimer.cpp b/Source/platform/SharedTimer.cpp
index 7a985958ad93d387199b13e1fb9a4943922112da..b0998df726ec00a5e315357dc1dd0effa9ec9465 100644
--- a/Source/platform/SharedTimer.cpp
+++ b/Source/platform/SharedTimer.cpp
@@ -29,7 +29,7 @@
 #include "platform/scheduler/Scheduler.h"
 #include "public/platform/Platform.h"
 
-namespace WebCore {
+namespace blink {
 
 void setSharedTimerFiredFunction(void (*f)())
 {
@@ -46,4 +46,4 @@ void stopSharedTimer()
     Scheduler::shared()->stopSharedTimer();
 }
 
-} // namespace WebCore
+} // namespace blink