Rename WebCore namespace to blink in Platform

Source/platform/mac/ScrollElasticityController.mm

Index: Source/platform/mac/ScrollElasticityController.mm
diff --git a/Source/platform/mac/ScrollElasticityController.mm b/Source/platform/mac/ScrollElasticityController.mm
index b8c5f51fd148f07e9db412f418e075b4e66e5212..09e239be00279396468764023ad0d1a8c44f13e8 100644
--- a/Source/platform/mac/ScrollElasticityController.mm
+++ b/Source/platform/mac/ScrollElasticityController.mm
@@ -55,7 +55,7 @@ static NSTimeInterval systemUptime()
     return 0;
 }
 
-namespace WebCore {
+namespace blink {
 
 static const float scrollVelocityZeroingTimeout = 0.10f;
 static const float rubberbandDirectionLockStretchRatio = 1;
@@ -452,6 +452,6 @@ bool ScrollElasticityController::shouldHandleEvent(const PlatformWheelEvent& whe
     return true;
 }
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // USE(RUBBER_BANDING)