More spelling changes.

src/heap.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 672 matching lines @@
   // failed.
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateRawAsciiString(
       int length,
       PretenureFlag pretenure = NOT_TENURED);
   MUST_USE_RESULT MaybeObject* AllocateRawTwoByteString(
       int length,
       PretenureFlag pretenure = NOT_TENURED);
 
   // Computes a single character string where the character has code.
-  // A cache is used for ascii codes.
+  // A cache is used for ASCII codes.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed. Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* LookupSingleCharacterStringFromCode(
       uint16_t code);
 
   // Allocate a byte array of the specified length
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateByteArray(int length,
@@ skipping 1665 matching lines @@
 
   // Returns size of object in heap (in MB).
   double SizeOfHeapObjects() {
     return (static_cast<double>(HEAP->SizeOfObjects())) / MB;
   }
 
   double start_time_;  // Timestamp set in the constructor.
   intptr_t start_size_;  // Size of objects in heap set in constructor.
   GarbageCollector collector_;  // Type of collector.
 
-  // A count (including this one, eg, the first collection is 1) of the
+  // A count (including this one, e.g. the first collection is 1) of the
   // number of garbage collections.
   unsigned int gc_count_;
 
   // A count (including this one) of the number of full garbage collections.
   int full_gc_count_;
 
   // Amounts of time spent in different scopes during GC.
   double scopes_[Scope::kNumberOfScopes];
 
   // Total amount of space either wasted or contained in one of free lists
@@ skipping 225 matching lines @@
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG || LIVE_OBJECT_LIST
 
 } }  // namespace v8::internal
 
 #undef HEAP
 
 #endif  // V8_HEAP_H_