Allow IdleNotification to trigger Scavenges.

src/heap/spaces.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_SPACES_H_
 #define V8_HEAP_SPACES_H_
 
 #include "src/allocation.h"
 #include "src/base/atomicops.h"
 #include "src/base/bits.h"
@@ skipping 1995 matching lines @@
     return (reinterpret_cast<intptr_t>(addr) & Page::kPageAlignmentMask) ==
            kObjectStartOffset;
   }
 
   static bool IsAtEnd(Address addr) {
     return (reinterpret_cast<intptr_t>(addr) & Page::kPageAlignmentMask) == 0;
   }
 
   Address address() { return reinterpret_cast<Address>(this); }
 
-  // Finds the NewSpacePage containg the given address.
+  // Finds the NewSpacePage containing the given address.
   static inline NewSpacePage* FromAddress(Address address_in_page) {
     Address page_start =
         reinterpret_cast<Address>(reinterpret_cast<uintptr_t>(address_in_page) &
                                   ~Page::kPageAlignmentMask);
     NewSpacePage* page = reinterpret_cast<NewSpacePage*>(page_start);
     return page;
   }
 
   // Find the page for a limit address. A limit address is either an address
   // inside a page, or the address right after the last byte of a page.
@@ skipping 846 matching lines @@
     count = 0;
   }
   // Must be small, since an iteration is used for lookup.
   static const int kMaxComments = 64;
 };
 #endif
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_SPACES_H_