Change OOMs to raise custom exception rather than breakpoint on Windows.

third_party/WebKit/Source/wtf/allocator/PartitionAlloc.cpp

Index: third_party/WebKit/Source/wtf/allocator/PartitionAlloc.cpp
diff --git a/third_party/WebKit/Source/wtf/allocator/PartitionAlloc.cpp b/third_party/WebKit/Source/wtf/allocator/PartitionAlloc.cpp
index ffd84069396e9947b61599846b82d80924034681..43f82f570224f5e87243d6882b83e23b387761b0 100644
--- a/third_party/WebKit/Source/wtf/allocator/PartitionAlloc.cpp
+++ b/third_party/WebKit/Source/wtf/allocator/PartitionAlloc.cpp
@@ -308,7 +308,7 @@ bool partitionAllocGenericShutdown(PartitionRootGeneric* root)
 #if !CPU(64BIT)
 static NEVER_INLINE void partitionOutOfMemoryWithLotsOfUncommitedPages()
 {
-    IMMEDIATE_CRASH();
+    OOM_CRASH();
 }
 #endif
 
@@ -323,17 +323,17 @@ static NEVER_INLINE void partitionOutOfMemory(const PartitionRootBase* root)
 #endif
     if (PartitionRootBase::gOomHandlingFunction)
         (*PartitionRootBase::gOomHandlingFunction)();
-    IMMEDIATE_CRASH();
+    OOM_CRASH();
 }
 
 static NEVER_INLINE void partitionExcessiveAllocationSize()
 {
-    IMMEDIATE_CRASH();
+    OOM_CRASH();
 }
 
 static NEVER_INLINE void partitionBucketFull()
 {
-    IMMEDIATE_CRASH();
+    OOM_CRASH();
 }
 
 // partitionPageStateIs*