Make classes and structures in core/inspector fast-allocated.

Source/core/inspector/InjectedScriptHostClient.h

Index: Source/core/inspector/InjectedScriptHostClient.h
diff --git a/Source/core/inspector/InjectedScriptHostClient.h b/Source/core/inspector/InjectedScriptHostClient.h
index 453b45a7ca8e49af6e00307ef2df469371e5c20d..0c339717a83cdf0f28206adf1932c7913b68bfc1 100644
--- a/Source/core/inspector/InjectedScriptHostClient.h
+++ b/Source/core/inspector/InjectedScriptHostClient.h
@@ -5,9 +5,12 @@
 #ifndef InjectedScriptHostClient_h
 #define InjectedScriptHostClient_h
 
+#include "wtf/FastAllocBase.h"
+
 namespace blink {
 
 class InjectedScriptHostClient  {
+    WTF_MAKE_FAST_ALLOCATED(InjectedScriptHostClient);
 public:
     virtual void muteWarningsAndDeprecations() { }
     virtual void unmuteWarningsAndDeprecations() { }