Remove unused param "width_" from SearchBox::OnMarginChange().

chrome/browser/ui/search/instant_ipc_sender.cc

Index: chrome/browser/ui/search/instant_ipc_sender.cc
diff --git a/chrome/browser/ui/search/instant_ipc_sender.cc b/chrome/browser/ui/search/instant_ipc_sender.cc
index 17271b53cd4591211e86988882d093448e13ec88..07b2d624822d536bce98bad3d61626643cc77fc4 100644
--- a/chrome/browser/ui/search/instant_ipc_sender.cc
+++ b/chrome/browser/ui/search/instant_ipc_sender.cc
@@ -16,8 +16,7 @@ class InstantIPCSenderImpl : public InstantIPCSender {
 
  private:
   virtual void SetOmniboxBounds(const gfx::Rect& bounds) OVERRIDE {
-    Send(new ChromeViewMsg_SearchBoxMarginChange(
-        routing_id(), bounds.x(), bounds.width()));
+    Send(new ChromeViewMsg_SearchBoxMarginChange(routing_id(), bounds.x()));
   }
 
   virtual void FocusChanged(OmniboxFocusState state,
@@ -41,8 +40,7 @@ class IncognitoInstantIPCSenderImpl : public InstantIPCSender {
 
  private:
   virtual void SetOmniboxBounds(const gfx::Rect& bounds) OVERRIDE {
-    Send(new ChromeViewMsg_SearchBoxMarginChange(
-        routing_id(), bounds.x(), bounds.width()));
+    Send(new ChromeViewMsg_SearchBoxMarginChange(routing_id(), bounds.x()));
   }
 
   DISALLOW_COPY_AND_ASSIGN(IncognitoInstantIPCSenderImpl);