base: Remove the string logging from CHECK().

base/process/memory_mac.mm

Index: base/process/memory_mac.mm
diff --git a/base/process/memory_mac.mm b/base/process/memory_mac.mm
index 4c1b12043e60b64fbc861102cb542e4943c6c0dc..112a80298606c3006eac009f9fa3fb50dd294d32 100644
--- a/base/process/memory_mac.mm
+++ b/base/process/memory_mac.mm
@@ -364,12 +364,14 @@ void EnableTerminationOnOutOfMemory() {
   // Don't do anything special on OOM for the malloc zones replaced by
   // AddressSanitizer, as modifying or protecting them may not work correctly.
 
+  // Old allocators unexpectedly non-null
   CHECK(!g_old_malloc && !g_old_calloc && !g_old_valloc && !g_old_realloc &&
-        !g_old_memalign) << "Old allocators unexpectedly non-null";
+        !g_old_memalign);
 
+  // Old allocators unexpectedly non-null
   CHECK(!g_old_malloc_purgeable && !g_old_calloc_purgeable &&
         !g_old_valloc_purgeable && !g_old_realloc_purgeable &&
-        !g_old_memalign_purgeable) << "Old allocators unexpectedly non-null";
+        !g_old_memalign_purgeable);
 
   ChromeMallocZone* default_zone =
       reinterpret_cast<ChromeMallocZone*>(malloc_default_zone());
@@ -401,9 +403,9 @@ void EnableTerminationOnOutOfMemory() {
   g_old_valloc = default_zone->valloc;
   g_old_free = default_zone->free;
   g_old_realloc = default_zone->realloc;
+  // Failed to get system allocation functions.
   CHECK(g_old_malloc && g_old_calloc && g_old_valloc && g_old_free &&
-        g_old_realloc)
-      << "Failed to get system allocation functions.";
+        g_old_realloc);
 
   default_zone->malloc = oom_killer_malloc;
   default_zone->calloc = oom_killer_calloc;
@@ -425,10 +427,10 @@ void EnableTerminationOnOutOfMemory() {
     g_old_valloc_purgeable = purgeable_zone->valloc;
     g_old_free_purgeable = purgeable_zone->free;
     g_old_realloc_purgeable = purgeable_zone->realloc;
+    // Failed to get system allocation functions.
     CHECK(g_old_malloc_purgeable && g_old_calloc_purgeable &&
           g_old_valloc_purgeable && g_old_free_purgeable &&
-          g_old_realloc_purgeable)
-        << "Failed to get system allocation functions.";
+          g_old_realloc_purgeable);
 
     purgeable_zone->malloc = oom_killer_malloc_purgeable;
     purgeable_zone->calloc = oom_killer_calloc_purgeable;
@@ -495,33 +497,36 @@ void EnableTerminationOnOutOfMemory() {
   // This will not catch allocation done by custom allocators, but will catch
   // all allocation done by system-provided ones.
 
+  // Old allocators unexpectedly non-null
   CHECK(!g_old_cfallocator_system_default && !g_old_cfallocator_malloc &&
-        !g_old_cfallocator_malloc_zone)
-      << "Old allocators unexpectedly non-null";
+        !g_old_cfallocator_malloc_zone);
 
   bool cf_allocator_internals_known = CanGetContextForCFAllocator();
 
   if (cf_allocator_internals_known) {
     CFAllocatorContext* context =
         ContextForCFAllocator(kCFAllocatorSystemDefault);
-    CHECK(context) << "Failed to get context for kCFAllocatorSystemDefault.";
+    // Failed to get context for kCFAllocatorSystemDefault.
+    CHECK(context);
     g_old_cfallocator_system_default = context->allocate;
-    CHECK(g_old_cfallocator_system_default)
-        << "Failed to get kCFAllocatorSystemDefault allocation function.";
+    // Failed to get kCFAllocatorSystemDefault allocation function.
+    CHECK(g_old_cfallocator_system_default);
     context->allocate = oom_killer_cfallocator_system_default;
 
     context = ContextForCFAllocator(kCFAllocatorMalloc);
-    CHECK(context) << "Failed to get context for kCFAllocatorMalloc.";
+    // Failed to get context for kCFAllocatorMalloc.
+    CHECK(context);
     g_old_cfallocator_malloc = context->allocate;
-    CHECK(g_old_cfallocator_malloc)
-        << "Failed to get kCFAllocatorMalloc allocation function.";
+    // Failed to get kCFAllocatorMalloc allocation function.
+    CHECK(g_old_cfallocator_malloc);
     context->allocate = oom_killer_cfallocator_malloc;
 
     context = ContextForCFAllocator(kCFAllocatorMallocZone);
-    CHECK(context) << "Failed to get context for kCFAllocatorMallocZone.";
+    // Failed to get context for kCFAllocatorMallocZone.
+    CHECK(context);
     g_old_cfallocator_malloc_zone = context->allocate;
-    CHECK(g_old_cfallocator_malloc_zone)
-        << "Failed to get kCFAllocatorMallocZone allocation function.";
+    // Failed to get kCFAllocatorMallocZone allocation function.
+    CHECK(g_old_cfallocator_malloc_zone);
     context->allocate = oom_killer_cfallocator_malloc_zone;
   } else {
     DLOG(WARNING) << "Internals of CFAllocator not known; out-of-memory "
@@ -535,16 +540,16 @@ void EnableTerminationOnOutOfMemory() {
   // Note that both +[NSObject new] and +[NSObject alloc] call through to
   // +[NSObject allocWithZone:].
 
-  CHECK(!g_old_allocWithZone)
-      << "Old allocator unexpectedly non-null";
+  // Old allocator unexpectedly non-null
+  CHECK(!g_old_allocWithZone);
 
   Class nsobject_class = [NSObject class];
   Method orig_method = class_getClassMethod(nsobject_class,
                                             @selector(allocWithZone:));
   g_old_allocWithZone = reinterpret_cast<allocWithZone_t>(
       method_getImplementation(orig_method));
-  CHECK(g_old_allocWithZone)
-      << "Failed to get allocWithZone allocation function.";
+  // Failed to get allocWithZone allocation function.
+  CHECK(g_old_allocWithZone);
   method_setImplementation(orig_method,
                            reinterpret_cast<IMP>(oom_killer_allocWithZone));
 }