Add back a static_cast<int32_t> to assembler-arm.cc to fix WebView build.

src/arm/assembler-arm.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 3667 matching lines @@
     ConstantPoolArray::Type type = GetConstantPoolType(rmode);
 
     // Update constant pool if necessary and get the entry's offset.
     int offset;
     if (entry->merged_index_ == -1) {
       offset = offsets[entry->section_][type];
       offsets[entry->section_][type] += ConstantPoolArray::entry_size(type);
       if (type == ConstantPoolArray::INT64) {
         constant_pool->set_at_offset(offset, rinfo.data64());
       } else if (type == ConstantPoolArray::INT32) {
-        constant_pool->set_at_offset(offset, rinfo.data());
+        constant_pool->set_at_offset(offset,
+                                     static_cast<int32_t>(rinfo.data()));
       } else if (type == ConstantPoolArray::CODE_PTR) {
         constant_pool->set_at_offset(offset,
                                      reinterpret_cast<Address>(rinfo.data()));
       } else {
         ASSERT(type == ConstantPoolArray::HEAP_PTR);
         constant_pool->set_at_offset(offset,
                                      reinterpret_cast<Object*>(rinfo.data()));
       }
       offset -= kHeapObjectTag;
       entry->merged_index_ = offset;  // Stash offset for merged entries.
@@ skipping 31 matching lines @@
       assm->instr_at_put(
           rinfo.pc(), Assembler::SetLdrRegisterImmediateOffset(instr, offset));
     }
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM