Add compile time checks against longs being used in IPC structs on 32 bit Android.

content/browser/renderer_host/text_input_client_mac_unittest.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "content/browser/renderer_host/text_input_client_mac.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 130 matching lines @@
       widget(), gfx::Point(2, 2));
   EXPECT_EQ(1U, ipc_sink().message_count());
   EXPECT_TRUE(ipc_sink().GetUniqueMessageMatching(
       TextInputClientMsg_CharacterIndexForPoint::ID));
   EXPECT_EQ(static_cast<NSUInteger>(NSNotFound), index);
 }
 
 TEST_F(TextInputClientMacTest, NotFoundCharacterIndex) {
   ScopedTestingThread thread(this);
   const NSUInteger kPreviousValue = 42;
-  const size_t kNotFoundValue = static_cast<size_t>(-1);
+  const uint32_t kNotFoundValue = static_cast<uint32_t>(-1);
 
   // Set an arbitrary value to ensure the index is not |NSNotFound|.
   PostTask(FROM_HERE,
            base::Bind(&TextInputClientMac::SetCharacterIndexAndSignal,
                       base::Unretained(service()), kPreviousValue));
 
   scoped_refptr<TextInputClientMessageFilter> filter(
       new TextInputClientMessageFilter(widget()->GetProcess()->GetID()));
   scoped_ptr<IPC::Message> message(
       new TextInputClientReplyMsg_GotCharacterIndexForPoint(
@@ skipping 35 matching lines @@
 
 TEST_F(TextInputClientMacTest, TimeoutRectForRange) {
   NSRect rect = service()->GetFirstRectForRange(widget(), NSMakeRange(0, 32));
   EXPECT_EQ(1U, ipc_sink().message_count());
   EXPECT_TRUE(ipc_sink().GetUniqueMessageMatching(
       TextInputClientMsg_FirstRectForCharacterRange::ID));
   EXPECT_NSEQ(NSZeroRect, rect);
 }
 
 }  // namespace content